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1. Una regla de cálculo para cálculos Seis Sigma, que comprende: una sección de visualización de escala estacionaria, una sección de visualización de escala móvil que desliza respecto a dicha sección estacionaria, una escala de Defectos por unidad (DPU) mostrada en una de dichas secciones, una escala de Oportunidad (OpCount) Mostrada en la otra de dichas secciones en alineación con dicha escala de DPU y una escala mostrada en una de dichas secciones para al menos dos parámetros seleccionados del grupo que consiste en Defectos por Millón de Oportunidades (DPMO), Clasificación Sigma y Cpk que miden cada uno cómo Libre de defectos un producto es una distribución estadística de una característica específica del producto y su cambio de media en el tiempo se establece para establecer una relación uno a uno entre los parámetros de modo que un solo movimiento de dicha sección deslizante se alinee dado Los valores DPU y OpCount entre sí calculan y muestran los valores para los parámetros seleccionados, mostrando al menos dos de dichos parámetros aumentando la cantidad de datos disponibles para un usuario y facilitando la correlación de los diferentes parámetros. 2. La regla de cálculo de la reivindicación 1, que incluye escalas para cada uno de dichos parámetros DPMO, Sigma Rating y C pk que se muestran de manera que los valores correspondientes para cada uno de dichos parámetros DPMO, Sigma Rating y C pk se establecen a partir de valores alineados dadas de DPU Y OpCount. 3. La regla de cálculo de la reivindicación 1, en la que dicha escala OpCount se muestra en dicha sección deslizante. 4. La regla de cálculo de la reivindicación 1, en la que dichas escalas DPU y OpCount son ambas logarítmicas. 5. La regla de cálculo de la reivindicación 1, que comprende además una escala de rendimiento de primera vez (FTY) en la misma sección y alineada con dicha escala de DPU. 6. La regla de cálculo de la reivindicación 5, en la que dicha escala OpCount se muestra en dicha sección deslizante, dicha sección estacionaria incluye una ventana para dicha escala OpCount y dichas escalas DPU y FTY se muestran en dicha sección estacionaria a lo largo de lados opuestos de dicha ventana en Alineación entre sí. 7. La regla de cálculo de la reivindicación 6, que incluye escalas para cada uno de dichos parámetros DPMO, Sigma Rating y C pk que se muestran en dicha sección de deslizamiento en alineación entre sí y con dicha escala OpCount, incluyendo dicha sección estacionaria ventanas respectivas para ver dicha DPMO, Sigma Rating y escalas C pk. 8. La regla de deslizamiento de la reivindicación 1, en la que dicha escala de DPU se extiende desde aproximadamente 110 -6 a aproximadamente 10, y dicha escala de OpCount se extiende desde aproximadamente 1 a aproximadamente 10 $ 6 $. 9. Una regla de cálculo para cálculos Seis Sigma, que comprende: una sección de visualización de escala estacionaria, una sección de visualización de escala deslizante que desliza respecto a dicha sección estacionaria, una escala de Rendimiento Inicial (FTY) mostrada en una de dichas secciones, una escala de Oportunidad (OpCount) Mostrada en la otra de dichas secciones en alineación con dicha escala FTY y una escala visualizada en una de dichas secciones para al menos dos parámetros seleccionados del grupo que consiste en Defectos por Millón de Oportunidades (DPMO), Clasificación Sigma y Cpk que cada uno mide cómo Sin defectos, un producto es una distribución estadística de una característica específica del producto y su cambio de media en el tiempo se establece para establecer una relación uno a uno entre los parámetros de modo que un solo movimiento de dicha sección deslizante se alinee dado Los valores FTY y OpCount entre sí calculan y muestran los valores para los parámetros seleccionados, mostrando al menos dos de dichos parámetros aumentando la cantidad de datos disponibles para un usuario y facilitando la correlación de los diferentes parámetros. 10. La regla de cálculo de la reivindicación 9, que incluye escalas para cada uno de dichos parámetros DPMO, Sigma Rating y C pk que se muestran de manera que los valores correspondientes para cada uno de dichos parámetros DPMO, Sigma Rating y C pk se establecen a partir de valores alineados FTY Y OpCount. 11. La regla de cálculo de la reivindicación 9, en la que dicha escala OpCount se muestra en dicha sección deslizante. 12. La regla de cálculo de la reivindicación 9, en la que dichas escalas OpCount y DPMO son ambas logarítmicas. 13. La regla de cálculo de la reivindicación 9, en la que dicha escala FTY se extiende desde aproximadamente 1 hasta aproximadamente 99.9999, y dicha escala OpCount se extiende desde aproximadamente 1 a aproximadamente 10 $ 6 $. 14. Una regla de cálculo para cálculos Seis Sigma, que comprende: una sección de visualización de escala estacionaria, una sección de visualización de escala deslizante que desliza con relación a dicha sección estacionaria, una escala que representa el Conteo de Oportunidad (OpCount) mostrado en una de dichas secciones, Dos de un primer conjunto de parámetros de Seis Sigma que consisten en Defectos por Millón de Oportunidades (DPMO), Sigma Rating y C pk que miden cómo un producto libre de defectos es y se muestran en la misma sección que dicha escala OpCount y al menos una escala Representando al menos uno de un segundo conjunto de parámetros Seis Sigma consistentes en Defectos por Unidad (DPU) y Primer Rendimiento (FTY) mostrados en la otra de dichas secciones, una distribución estadística de una característica específica del producto y su desplazamiento medio Con el tiempo para establecer una relación uno a uno entre los parámetros en dicho primer conjunto de modo que un solo movimiento de dicha escala de diapositivas para alinear dichas escalas de parámetros OpCount y segundo ajuste calcula y muestre los valores para los parámetros seleccionados en dicho Primero, la visualización de al menos dos de dichos parámetros aumentando la cantidad de datos disponibles para un usuario y facilitando la correlación de los diferentes parámetros. 15. La regla de cálculo de la reivindicación 14, en la que dicha escala OpCount se muestra en dicha sección deslizante. 16. La regla de cálculo de la reivindicación 15, que incluye escalas para cada uno de dichos parámetros DPU y FTY mostrados en dicha sección estacionaria, en donde dichas escalas DPU y FTY están alineadas entre sí. 17. La regla de cálculo de la reivindicación 16, incluyendo dicha sección estacionaria una ventana para dicha escala OpCount, en la que dichas escalas DPU y FTY se muestran a lo largo de lados opuestos de dicha ventana. 18. La regla de cálculo de la reivindicación 14, que incluye escalas para cada uno de dichos parámetros DPMO, Sigma Rating y C pk. 19. La regla de cálculo de la reivindicación 14, que incluye escalas logarítmicas para cada uno de dichos parámetros DPMO, DPU y OpCount. Antecedentes de la invención 1. Campo de la invención Esta invención se refiere a una regla de cálculo que implementa fórmulas asociadas con el programa de análisis de calidad Six Sigma. Descripción de la técnica relacionada Con la llegada del mercado mundial y la correspondiente demanda de los consumidores por productos altamente fiables, la calidad se ha convertido en un problema cada vez más importante para los fabricantes. Cuando se producen y venden productos manufacturados que tienen defectos, el resultado es un tiempo de fabricación perdido, así como una publicidad desfavorable para el fabricante. La calidad de una línea de productos de la compañía puede por lo tanto desempeñar un papel decisivo en la determinación de la reputación de la compañía. Como resultado de esta presión por productos libres de defectos, se hace mayor hincapié en el control de calidad en todos los niveles, ya no es sólo un problema con el que se ocupan los gerentes de control de calidad. Esto ha llevado a diversas iniciativas diseñadas para mejorar la calidad, tales como los programas de gestión de calidad total (TQM) y Six Sigma. Una visión general del programa Seis Sigma es presentada por Mikel J. Harry y J. Ronald Lawson en Six Sigma Análisis de Productividad y Caracterización de Procesos, Addison Wesley Publishing Co. págs. 1-1 a 1-5, 1992. El objetivo de los Seis Sigma programa es reducir significativamente el número de defectos dentro de los productos, sobre todo cuando los productos involucran un gran número de componentes. Con este fin, el programa Six Sigma utiliza diversas pruebas estadísticas que los trabajadores y los gerentes utilizan para medir la calidad de los productos, tanto en el desarrollo como en la producción. Algunas de estas pruebas implican una terminología específica. Una oportunidad es cualquier cosa que debe ser correcta para producir un producto o servicio libre de defectos, o, alternativamente, cualquier cosa que puede salir mal y evitar que el producto funcione. Por ejemplo, las oportunidades podrían ser pasos en un proceso de fabricación, o partes y cables en un conjunto de tarjetas de circuitos. El número total de todas las oportunidades en un producto dado se conoce como el recuento de oportunidades de productos (OpCount). Un defecto se refiere a cualquier variación en una característica de un producto (por ejemplo, su longitud, ancho, peso, etc.) que está lo suficientemente alejada de su valor objetivo para evitar que el producto funcione correctamente. Defectos por unidad (DPU) es el número promedio de defectos por unidad (es decir, defectos por producto). Esta tasa se normaliza a menudo a un millón de oportunidades y se refiere como el número de defectos por millón de oportunidades (DPMO). En general, la DPMO se da por The First Time Yield (FTY) es el porcentaje de unidades que están completamente libres de defectos. Como se describe en las páginas 2-4 a 2-8 de la referencia de Harry y Lawson, el FTY puede ser aproximado en general por la conocida relación de Poisson: The Sigma Rating y C pk son también medidas de cómo un producto libre de defectos es y Se basan en estadísticas de Gauss, como se explica a continuación. La calidad de la producción se puede seguir trazando en forma de histograma un parámetro que mide una característica específica del producto que se está fabricando (por ejemplo, su longitud) contra la frecuencia de producción. HIGO. 1 muestra tal histograma que comprende varias barras 10, en las que la altura de una barra representa el número de productos que caen dentro de un cierto intervalo del parámetro. Las barras 10 tienden a congregarse alrededor de una barra central 10, que está idealmente cerca del punto de diseño óptimo para el parámetro considerado. De acuerdo con el conocido Teorema del Límite Central, un histograma de una muestra grande tenderá hacia una distribución gaussiana 14, independientemente de si, por ejemplo, se suponen distribuciones de Poisson o binomiales para el parámetro considerado. Esta función de distribución gaussiana 14 está dada por EQU1 para - ltxlt, en la que la media estadística viene dada por, y es la desviación estándar. Aproximadamente 68 del área de la función 14 se encuentra dentro de una desviación estándar (1) de la media, 95 dentro de 2 de ella, y 99.9999998 dentro de 6 de. Con el tiempo, sin embargo, la media puede alejarse del punto óptimo de diseño y tender hacia una nueva media. Esto puede deberse a la degradación de las herramientas utilizadas en la fabricación del producto, por ejemplo. Esto se explica dentro del formalismo Six Sigma de una manera ad hoc asumiendo un cambio adicional a la media de 1,5 para dar una distribución Gaussiana modificada 16, como se muestra en la FIG. 2, en la que la distribución gaussiana 14 también ha sido replotada. La fracción de la distribución Gaussiana modificada 16 (en la que 1,5) que está más allá del punto 6 de la distribución Gaussiana no modificada 14 corresponde a 3,4 partes por millón (ppm), que es típicamente el objetivo DPMO del programa Seis Sigma. Por lo tanto, se dice que una DPMO de 3,4 ppm es equivalente a una Clasificación Sigma de 6. En general, la Clasificación Sigma puede determinarse calculando la DPMO, correlacionando este valor con el área equivalente por debajo de la distribución gaussiana modificada 16 entre y algunos valores inferiores Límite más cercano a, y la determinación de cuántas desviaciones estándar de la media sin modificar este límite inferior se desplaza. Por lo tanto, una mayor DPMO corresponde a una menor Clasificación Sigma y viceversa. La Clasificación Sigma también puede expresarse por C pk. Que se discute en las pp. 5-11 a 5-13 de la referencia de Harry y Lawson. Para el caso que nos ocupa, puede expresarse como: Por lo tanto, los parámetros DPMO, Sigma Rating y C pk son expresiones alternativas de la frecuencia de defectos con respecto al número total de oportunidades. Para calcular estos parámetros puede ser engorroso, incluso si se utiliza una calculadora de mano. Para evitar el inconveniente de utilizar calculadoras, se utilizan a menudo tablas de consulta en las que los diversos parámetros de interés se enumeran en columnas y se correlacionan entre sí. Sin embargo, estas tablas no proporcionan al usuario suficiente flexibilidad, p. Generalmente es necesario interpolar entre los valores listados. Además, el usuario no presenta información de manera interactiva, de modo que se pierde la sensación de los números y la relación de las diversas cantidades entre sí. Las reglas de diapositivas existentes, incluso aquellas relacionadas con procesos estadísticos, no abordan adecuadamente las preocupaciones del usuario de Six Sigma. Por ejemplo, el Tutor de SPC de Dimensional Data Systems, 1990, está diseñado para examinar diversas capacidades de proceso, incluyendo C pk. Pero estos no están correlacionados con otros parámetros de importancia para el usuario de Seis Sigma como DPU, FTY, OpCount, DPMO y el Sigma Rating. Por lo tanto, esta regla de cálculo en particular no beneficia al usuario de Six Sigma. Sumario de la invención La presente invención es para una regla de cálculo que calcula varios parámetros asociados con el programa de análisis de calidad Six Sigma con un solo movimiento de la corredera. El usuario ahorra tiempo evitando el aburrimiento asociado con la hoja de cálculo y los cálculos electrónicos. La regla de cálculo proporciona al usuario la flexibilidad para realizar cálculos rápidamente y correlacionar simultáneamente los diversos parámetros discutidos en el presente documento, lo que le permite analizar rápidamente el rendimiento de procesos y partes de un producto. La invención incluye una sección de presentación en escala deslizante que es preferiblemente una hoja deslizante que tiene incrustaciones impresas en ella para cantidades tales como DPMO, Sigma Rating, C pk y OpCount. La hoja deslizante se desliza en una sección de visualización de escala estacionaria que preferiblemente incluye escalas para DPU y FTY situadas en lados opuestos de una ventana que se acopla con la escala OpCount. La sección estacionaria incluye también ventanas que permiten ver las otras escalas de la hoja deslizante. Al alinear la escala OpCount con la escala DPU o la escala FTY, el usuario puede calcular los valores DPMO, Sigma Rating y C pk correspondientes. Las escalas DPU, OpCount y DPMO son preferiblemente logarítmicas. Otras características y ventajas de la invención serán evidentes para los expertos en la técnica a partir de la siguiente descripción detallada, tomada junto con los dibujos adjuntos. Descripción de los dibujos La FIG. 1 es un histograma que ilustra cómo una gran muestra de productos tiende a una distribución gaussiana con respecto a un parámetro de fabricación. 2 es un gráfico que muestra una distribución gaussiana típica y un Gaussiano de desplazamiento medio que caracteriza el análisis Six Sigma y la Fig. 3 es una vista en alzado que ilustra una realización preferida de la invención. Descripción detallada de la invención La invención funciona como una regla de deslizamiento y permite al usuario correlacionar, con un solo movimiento de la diapositiva, diversos parámetros que se usan comúnmente en el programa de análisis de calidad Six Sigma, tales como DPU, OpCount, FTY, DPMO , Sigma Rating y C pk. Comprende escalas para preferiblemente cada una de estas cantidades, algunas de las cuales son deslizables, de manera que, por ejemplo, los valores de OpCount y DPU pueden seleccionarse para generar cantidades estadísticas relacionadas tales como DPMO, Sigma Rating y C pk. La realización preferida se muestra en la Fig. E incluye una sección de visualización de escala deslizante que es preferiblemente una hoja deslizante 20 que se desliza dentro y fuera de una sección de visualización de escala estacionaria que es preferiblemente una sección de bolsillo estacionaria 22, cuyos extremos están abiertos. La lámina deslizante 20 está hecha preferiblemente de papel rígido o de plástico y preferiblemente tiene cuatro escamas impresas en ella: una escala DPMO 24, una escala de Clasificación Sigma 26, una escala Cpk 28 y una escala OpCount 30. De este modo, las básculas 24, 26 , 28 y 30 se deslizan dentro y fuera de la sección de bolsa estacionaria 22 con su hoja de deslizamiento 20. Todas las escalas descritas en la presente memoria preferiblemente incluyen una serie de marcas que se designan periódicamente con números para indicar sus valores. La sección de bolsa estacionaria 22 comprende preferentemente una hoja de caras 32 y una hoja trasera (no mostrada), tanto de papel rígido como de plástico y asegurada junto con elementos de fijación metálicos 36, de manera que la hoja deslizante 20 se aloja de forma segura en la sección de bolsillo estacionaria. Las muescas de pulgar 38 se cortan en uno o ambos extremos de la hoja de caras 32 así como la hoja posterior de la sección de bolsa estacionaria 22 para permitir al usuario agarrar más fácilmente la hoja de deslizamiento 20 después de haber sido insertada en la sección de bolsa estacionaria. La hoja de rosca 32 preferiblemente tiene dos escamas impresas en ella, una escala de DPU 40 y una escala FTY 42, ası como tres ventanas 44 (es decir, orificios cortados en la hoja de caras) que permiten que las escalas 24, 26 y 28 de la hoja deslizante 20 sean Que se ve cuando esta hoja se inserta en la sección de bolsa estacionaria 22 y otra ventana 46 para la escala OpCount 30. La ventana 46 permite que la escala OpCount 30 se alinee en la escala DPU 40 o la escala FTY 42. Al lado de las ventanas 44 hay indicadores impresos respectivos 48 que son preferiblemente flechas alineadas mutuamente que apuntan hacia valores correspondientes en sus escalas respectivas. Además, la hoja facial 32 incluye preferiblemente material impreso junto a cada una de las básculas 40 y 42, así como ventanas 44 y 46 para guiar al usuario en cuanto al significado de cada escala. Por ejemplo, las palabras Defectos por unidad (o DPU) pueden imprimirse por encima de la escala DPU 40, First Time Yield (o FTY) junto a la escala FTY 42 y así sucesivamente. La escala DPU 40, la escala OpCount 30 y la escala 24 de DPMO son preferiblemente escalas logarítmicas. Los parámetros DPU, OpCount y DPMO están relacionados entre sí a través de la relación lineal dada por la ecuación (1), de manera que si se conocen valores para dos de estos tres parámetros, se puede calcular el tercer. La situación más comúnmente encontrada es cuando se conocen DPU y OpCount. En este caso, los valores de estos parámetros se seleccionan con las escalas DPU y OpCount 40 y 30 alineando los dos valores entre sí, y el valor correspondiente para DPMO se lee de la escala DPMO 24 con su indicador 48. En el caso menos común Se conoce el valor DPMO con el indicador 48 de la escala DPMO 24 y, a continuación, el valor DPU (o OpCount) se puede encontrar en su escala respectiva, con el parámetro Valor del parámetro restante que se está leyendo de su escala. Los parámetros Sigma Rating y C pk están relacionados entre sí por la ecuación (4), ya DPMO a través de las relaciones de funciones gaussianas discutidas anteriormente. Dado que existe una relación uno a uno entre estos parámetros, un valor conocido para uno establece los otros dos. Las escalas para DPMO 24, Sigma Rating 26 y C pk 28 están espacialmente alineadas con respecto a la otra sobre la lámina deslizante 20 de manera que sus valores bajo sus respectivos indicadores 48 reflejen esta relación uno a uno. La escala DPU 40 y la escala FTY 42, que están situadas en la hoja de caras 32, tienen una relación uno a uno entre sí dada por la ecuación (2). Este hecho se refleja en el posicionamiento relativo de la escala DPU 40 y la escala FTY 42, que están preferentemente situadas en lados opuestos de la ventana 46. Las marcas de la escala OpCount 30 se extienden preferiblemente a través de toda la longitud de la ventana 46, de modo que pueden usarse Como una guía para el ojo al realizar esta correlación entre las escalas DPU y FTY 40 y 42. De este modo, si se conocen valores para FTY y OpCount, se pueden calcular los valores de DPMO, Sigma Rating y C pk. Los intervalos preferibles para las escalas de los parámetros descritos en la presente memoria son: DPU (110 - 6 a 10), OpCount (1 a 10), FTY (99,9999 a 1), DPMO (106 a 0,02), Clasificación Sigma (1,5 a 7,0) , Y C $ _ {pk} $ (0 a 1,85). Aunque se ha mostrado y descrito una realización particular de la invención, se producirán numerosas variaciones y realizaciones alternativas a los expertos en la técnica. De acuerdo con ello, se pretende que la invención se limite sólo en términos de las reivindicaciones adjuntas. Piano clave finder acorde indicador forex Piano clave finder acorde indicador forex Piano clave finder acorde indicador forex sistemas de comercio de divisas presentan la facilidad de comercio de múltiples sistemas y múltiples mercados. Opciones binarias trading retiro rentable: revisiones de sistemas y enviar su propio comercio: todos los días de septiembre. Terminal T3 - Vuelos internacionales y nacionales (con la excepción de las aerolíneas de bajo coste listadas arriba). Un día de funcionamiento hacia abajo es simplemente la imagen especular de un día de ejecución. Los días de ejecución se pueden considerar como un indicador de seguimiento de tendencias en el sentido de que solo pueden identificarse N días después de que la tendencia haya pasado. 000. aviso que incluso se extiende hasta la Asociación de Fondos Mutuos. 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I recommend looking for the answer to your question in google Fabjus What a crazy idea 8 of 10 on the basis of 33961 ReviewAn instructional device for use by music students is constructed as an outer sleeve having a slide member fitted within it. The outer sleeve has first and second sets of openings and is imprinted with a representation of a piano keyboard. The slide member has alphabetic representations of musical notes showing through the first set of openings as the slide member is moved. One alphabetic representation shows the musical key selected and seven others display the notes of the chromatic scale and major and minor chords associated with that key. A first series of markings sized and located to show through the second set of openings will indicate the piano keys related to the chromatic scale selected. Additional sets of openings and markings on the slide member indicate the piano keys associated with the major and minor chords selected. These piano keys shown by colored markings or specially shaped openings. Belasco, David A. Belasco Jacobs Townsley, LLP 1. A piano key finder and chord indicator, comprising: an outer sleeve, said outer sleeve being formed of semi-rigid material and having a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity said interior cavity being open at said first and second ends of said outer sleeve said outer sleeve having a representation of a portion of a piano keyboard and first and second sets of openings penetrating at least one of said front and rear surfaces a slide member, said slide member having first and second ends and being sized and shaped to fit slidably within said interior cavity said slide member having a first portion and a second portion said first portion carrying alphabetic representations, said representations being sized and shaped to be visible through said first set of openings in said outer sleeve as said slide member is moved through said outer sleeve said alphabetic representations illustrating a selected musical key, a chromatic scale, a major chord and a minor chord associated with said musical key said second portion having a first series of markings, said first markings being sized and shaped to be visible through said second set of openings in said outer sleeve as said slide member is moved through said outer sleeve said first markings indicating piano keys associated with the chromatic scale associated with said selected musical key and first and second enlarged end sections, said enlarged end sections being attached at said first and second ends of said slide member said enlarged end sections being sized and shaped to prevent their passage through said interior cavity whereby, when the slide member is moved through the interior cavity to permit alignment of the alphabetic representations with the first set of openings, the slide member will remain permanently and slidably attached to the outer sleeve and whereby, when a user moves the slide member within said inner cavity of said outer sleeve, aligning one of the first set of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key, the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key will be visible through the first set of openings and the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings. 2. A piano key finder and chord indicator, comprising: an outer sleeve, said outer sleeve being formed of semi-rigid material and having a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity said interior cavity being open at said first and second ends of said outer sleeve said outer sleeve having a representation of a portion of a piano keyboard and first and second sets of openings penetrating at least one of said front and rear surfaces said second set of openings being of a first predetermined shape a slide member, said slide member having first and second ends and being sized and shaped to fit slidably within said interior cavity said slide member having a first portion and a second portion said first portion carrying alphabetic representations, said representations being sized and shaped to be visible through said first set of openings in said outer sleeve as said slide member is moved through said outer sleeve said alphabetic representations illustrating a selected musical key, a chromatic scale, a major chord and a minor chord associated with said musical key said second portion having a first series of markings, said first markings being sized and shaped to be visible through said second set of openings in said outer sleeve as said slide member is moved through said outer sleeve said first markings indicating piano keys associated with the chromatic scale associated with said selected musical key a third set of openings in said outer sleeve, said third set of openings being of a second predetermined shape and disposed upon said representation of a portion of a piano keyboard and a second series of markings, said second series of markings being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key when the sleeve member is aligned with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and whereby, when a user moves the slide member within said inner cavity of said outer sleeve, aligning one of the first set of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key, the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key will be visible through the first set of openings and the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings. 3. A piano key finder and chord indicator as described in claim 2, further comprising: a fourth set of openings in said outer sleeve, said fourth set of openings being of a third predetermined shape and disposed upon said representation of a portion of a piano keyboard and a third series of markings, said third series of markings being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key when the slide member is aligned with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings. 4. A piano key finder and chord indicator, comprising: an outer sleeve, said outer sleeve being formed of semi-rigid material and having a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity said interior cavity being open at said first and second ends of said outer sleeve said outer sleeve having a representation of a portion of a piano keyboard and first and second sets of openings penetrating at least one of said front and rear surfaces a slide member, said slide member having first and second ends and being sized and shaped to fit slidably within said interior cavity said slide member having a first portion and a second portion said first portion carrying alphabetic representations, said representations being sized and shaped to be visible through said first set of openings in said outer sleeve as said slide member is moved through said outer sleeve said alphabetic representations illustrating a selected musical key, a chromatic scale, a major chord and a minor chord associated with said musical key said second portion having a first series of markings, said first markings being sized and shaped to be visible through said second set of openings in said outer sleeve as said slide member is moved through said outer sleeve said first markings indicating piano keys associated with the chromatic scale associated with said selected musical key said first series of markings being of a first predetermined color a fifth set of openings in said outer sleeve, said fifth set of openings being disposed upon said representation of a portion of a piano keyboard and a fourth set of markings, said fourth set of markings being of a second predetermined color and being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key when the slide member is aligned with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and whereby, when a user moves the slide member within said inner cavity of said outer sleeve, aligning one of the first set of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key, the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key will be visible through the first set of openings and the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings. 5. A piano key finder and chord indicator as described in claim 4, further comprising: a sixth set of openings in said outer sleeve, said sixth set of openings being disposed upon said representation of a portion of a piano keyboard and a fifth series of markings, said fifth series of markings being of a third predetermined color and disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key when the slide member is aligned with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings. 6. A piano key finder and chord indicator as described in claim 5, further comprising: a fifth and sixth set of openings in said outer sleeve, said fifth and sixth set of openings being disposed upon said representation of a portion of a piano keyboard and a fourth and fifth series of markings, said fourth and fifth series of markings being of second and third predetermined colors respectively, and disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key when the slide member is aligned with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings. 7. A method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key, comprising steps of: providing an outer sleeve, said outer sleeve being formed of semi-rigid material and having a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity said interior cavity being open at said first and second ends of said outer sleeve said outer sleeve having a representation of a portion of a piano keyboard and first and second series of openings penetrating at least one of said front and rear surfaces providing a slide member, said slide member having first and second ends and being sized and shaped to fit slidably within said interior cavity said slide member having a first portion and a second portion marking said first portion with alphabetic representations, said representations being sized and shaped to be visible through said first set of openings in said outer sleeve as said slide member is moved through said outer sleeve said alphabetic representations illustrating a selected musical key, a chromatic scale, a major chord and a minor chord associated with said musical key providing said second portion with a first series of markings, said first markings being sized and shaped to be visible through said second set of openings in said outer sleeve as said slide member is moved through said outer sleeve said first markings indicating piano keys associated with the chromatic scale associated with said selected musical key moving said slide member within said inner cavity of said outer sleeve to align one of the first series of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key displaying the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key through the first series of openings displaying the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings providing the second set of openings in the outer sleeve in a first predetermined shape providing a third set of openings in said outer sleeve, said third set of openings being of a second predetermined shape and disposed upon said representation of a portion of a piano keyboard providing a second set of markings, said second set of markings being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key aligning said sleeve member with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and displaying the piano keys associated with the major chord associated with the selected musical key. 8. A method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key as described in claim 7, further comprising the steps of: providing a fourth set of openings in said outer sleeve, said fourth set of openings being of a third predetermined shape and disposed upon said representation of a portion of a piano keyboard providing a third set of markings, said third set of markings being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key aligning said sleeve member with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and displaying the piano keys associated with the minor chord associated with the selected musical key. 9. A method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key, comprising steps of: providing an outer sleeve, said outer sleeve being formed of semi-rigid material and having a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity said interior cavity being open at said first and second ends of said outer sleeve said outer sleeve having a representation of a portion of a piano keyboard and first and second series of openings penetrating at least one of said front and rear surfaces providing a slide member, said slide member having first and second ends and being sized and shaped to fit slidably within said interior cavity said slide member having a first portion and a second portion marking said first portion with alphabetic representations, said representations being sized and shaped to be visible through said first set of openings in said outer sleeve as said slide member is moved through said outer sleeve said alphabetic representations illustrating a selected musical key, a chromatic scale, a major chord and a minor chord associated with said musical key providing said second portion with a first series of markings, said first markings being sized and shaped to be visible through said second set of openings in said outer sleeve as said slide member is moved through said outer sleeve said first markings indicating piano keys associated with the chromatic scale associated with said selected musical key said first set of markings being in a first predetermined color moving said slide member within said inner cavity of said outer sleeve to align one of the first series of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key displaying the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key through the first series of openings displaying the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings providing a third set of openings in said outer sleeve, said third set of openings being disposed upon said representation of a portion of a piano keyboard and providing a second set of markings, said second set of markings being of a second predetermined color and being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key aligning said sleeve member with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and displaying the piano keys associated with the major chord associated with the selected musical key. 10. A method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key as described in claim 9, further comprising the steps of: providing a fourth set of openings in said outer sleeve, said fourth set of openings being disposed upon said representation of a portion of a piano keyboard providing a third set of markings, said third set of markings being of a third predetermined color and disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key aligning said sleeve member with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and displaying the piano keys associated with the minor chord associated with the selected musical key. FIELD OF INVENTION The invention pertains to teaching and learning aids for musical instruments. More particularly, the invention relates to a device for helping piano students to determine which notes and piano keyboard locations are associated with the chromatic scale for each key and which major and minor chords are associated with that key. BACKGROUND OF THE INVENTION Various hand-held devices have been developed for assisting music teachers and students to determine the notes and chord combinations associated with each key. These inventions involve different types of wheels, rotating cylinders, vertical and horizontal slides and similar devices. Some of these inventions illustrate fingering combinations for use with a guitar. Pat. No. 4,960,029 issued to Nelson is directed to a musical scale-determining device. The device has a thin sheet material body constructed of either paper or plastic or some other rigid material. Printed on the front surface are a number of longitudinally oriented rows of musical notes. Two of the rows are located within an upper section and two of the rows are located in a lower section. Located on the front surface are a series of indicators comprising a pointer that point either to the upper section or the lower section, or both. Located on the back surface of the body are vertical rows of musical notes, again located in an upper section and a lower section. Formed within the back surface of a cursor are a series of transparent windows for observing a single column of three notes within either an upper section or a lower section. This cursor is slidable and is used to determine the major and minor chords for different keys. Within the front surface of the cursor are also located a plurality of windows with identifying indicia as Roman Numerals IVIII to denote major sharp and flat scales. The cursor is also formed of thin sheet material and forms an internal chamber into which the necked down section of the body is disposed. Pat. No. 3,668,967 issued to Malis, is directed to a chord indicator in the form of a slide rule device. The device is comprised of a first elongated slide, a second elongated slide carried within the first slide, and an outer elongated indicator which is adapted to slidably receive and contain the first and second slides. The first slide is an elongated sleeve, which surrounds the second slide, and indicator is also an elongated sleeve, which surrounds the second slide. The first slide has a series of indexing windows extending completely through the front face at a location near the right end thereof to show corresponding chord type identification. The front face of the first slide also includes a plurality of apertures along its length, which are substantially equal in size to and are adapted to uncover spots on the second slide. The first slide also has imprinted along the lower edge of its front surface a series of characters, which represent the various notes in the scale. Manipulation of the slides permit identification of the chord name, title or selection of a particular chord, identification of the notes in that chord, the chord type, and other useful musical information. Pat. No. 6,031,172, issued to Papadopoulos is directed to music teaching aid. The teaching aid comprises a cylindrical body, the periphery of which is substantially covered by a plurality of reference rings that have independent rotary movement. As seen, each ring is divided into twelve segments, each of which has an identification that represents the successive notes of the chromatic scale. It is seen that appropriate manipulation of these rings with accompanying teaching aids permits one to identify all possible types of scales, major, minor and chord constructions. Pat. No. 675,345 issued to Bauer is directed to a music chart circa 1901. It is seen that there is a music chart with a face-plate and a back plate which is ruled longitudinally to form a series of subdivisions or rows to indicate the principal major chords and corresponding minor chords which are identifying through the use of a slider which can be appropriately slidingly displaced to identify major keys, minor key, dominant chords and tonic triads. Pat. No. 5,386,757 issued to Derrick is directed to a universal musical scale, scale pattern, and chord indicator. Device housing is of a slide-rule nature and is generally a hollow envelope-shaped enclosure open at either end and designed to function interdependently with any pre-selected sliding member. A number of sliding members are provided with indicia indicative of the degrees of a musical scale respectively printed adjacent to each display window formed in housing. As seen, the combination of the primary housing with a particular sliding member provides information to identify certain characteristics within musical scales and assist in the identification of chords, tone indicators and other musical qualities. While other variations exist, the above-described designs for note and chord identifying devices are typical of those encountered in the prior art. It is an objective of the present invention to provide a simple, portable device for use by piano students and teachers to determine the notes of the chromatic scale for each key. It is a further objective to provide a device that indicates the piano keyboard locations for each such note. It is a still further objective of the invention to identify the major and minor chords associated with each key. It is yet a further objective to indicate the keyboard locations of each of the major and minor chords. Finally, it is an objective of the invention to provide the above-described capabilities in an inexpensive and durable device that may be easily and inexpensively manufactured. While some of the objectives of the present invention are disclosed in the prior art, none of the inventions found include all of the requirements identified. SUMMARY OF THE INVENTION The present invention addresses all of the deficiencies of prior piano key finder and chord indicator inventions and satisfies all of the objectives described above. (1) A piano key finder and chord indicator providing the desired features may be constructed from the following components. Means are provided for displaying alphabetic representations of a chromatic scale associated with a selected musical key. Means are provided for displaying alphabetic representations of major and minor chords associated with the selected musical key. Means are provided for indicating piano keys associated with the chromatic scale associated with the selected musical key. (2) In a variant of the invention, an outer sleeve is provided. The outer sleeve is formed of semi-rigid material and has a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity. The interior cavity is open at the first and second ends of the outer sleeve. The outer sleeve has a representation of a portion of a piano keyboard and first and second series of openings penetrating at least one of the front and rear surfaces. A slide member is provided. The slide member has first and second ends and is sized and shaped to fit slidably within the interior cavity. The slide member has a first portion and a second portion. The first portion carries alphabetic representations. The representations are sized and shaped to be visible through the first set of openings in the outer sleeve as the slide member is moved through the outer sleeve. The alphabetic representations illustrate a selected musical key, a chromatic scale a major chord and a minor chord associated with the musical key. The second portion has a first series of markings. The first markings are sized and shaped to be visible through the second set of openings in the outer sleeve as the slide member is moved through the outer sleeve. The first markings indicate piano keys associated with the chromatic scale associated with the selected musical key. When a user moves the slide member within the inner cavity of the outer sleeve, aligning one of the first series of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key, the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key will be visible through the first set of openings and the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings. (3) In another variant, the piano key finder and chord indicator further includes means for preventing the slide member from being removed from the outer sleeve. (4) In yet another variant, the means for preventing the slide member from is removed from the outer sleeve further includes first and second enlarged end sections. The enlarged end sections are attached at the first and second ends of the slide member. The enlarged end sections are sized and shaped to prevent their passage through the interior cavity. When the slide member is moved through the interior cavity to permit alignment of the alphabetic representations with the first the series of openings, the slide member will remain permanently and slidably attached to the outer sleeve. (5) In still another variant, at least one finger notch is provided. The finger notch is located at either of the first and second ends of the outer sleeve. When the first end of the slide member is aligned with the first end of the inner sleeve, the finger notch will permit the slide member to be either of pulled from and pushed into the outer sleeve. (6) In a further variant of the invention, the second set of openings in the outer sleeve are of a first predetermined shape. (7) In still a further variant, a third set of openings in the outer sleeve is provided. The third set of is of a second predetermined shape and located on the representation of a portion of a piano keyboard. A second series of markings is provided. The second series of markings is located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key when the sleeve member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (8) In another variant, a fourth set of openings in the outer sleeve is provided. The fourth set of openings is of a third predetermined shape and located on the representation of a portion of a piano keyboard. A third series of markings is provided. The third series of markings is located upon the second portion of the slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key when the slide member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (9) In yet another variant, a third and a fourth set of openings in the outer sleeve are provided. The third set of openings is of a second predetermined shape, the fourth set of openings is of a third predetermined shape. The third and fourth set of openings are located upon the representation of a portion of a piano keyboard. Second and third series of marking are provided. The second and third series of markings are located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a major chord and a minor chord for a selected key when the slide member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (10) In still another variant, the first series of markings are of a first predetermined color. (11) In still a further variant, a fifth set of openings in the outer sleeve is provided. The fifth set of openings is located on the representation of a portion of a piano keyboard. A fourth series of markings is provided. The fourth series of markings is of a second predetermined color and is located upon the second portion of the slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key when the slide member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (12) In yet a further variant of the invention, a sixth set of openings in the outer sleeve is provided. The sixth set of openings is located on the representation of a portion of a piano keyboard. A fifth series of markings is provided. The fifth series of markings is of a third predetermined color and located upon the second portion of the slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key when the slide member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (13) In still a further variant, a fifth and a sixth set of openings in the outer sleeve are provided. The fifth and sixth sets of openings are located on the representation of a portion of a piano keyboard. A fourth and a fifth series of markings are provided. The fourth and fifth series of markings are of second and third predetermined colors, and located on the second portion of the slide member. The fourth and fifth sets of markings are positioned so as to indicate the piano keys associated with a major chord and a minor chord for a selected key when the slide member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (14) In a further variant of the invention, a method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key is providing, which includes steps of: Providing an outer sleeve. The outer sleeve is formed of semi-rigid material and has a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity. The interior cavity is open at the first and second ends of the outer sleeve. The outer sleeve has a representation of a portion of a piano keyboard and first and second series of openings penetrating at least one of the front and rear surfaces. Providing a slide member. The slide member has first and second ends and is sized and shaped to fit slidably within the interior cavity. The slide member has a first portion and a second portion. Marking the first portion with alphabetic representations. The representations are sized and shaped to be visible through the first set of openings in the outer sleeve as the slide member is moved through the outer sleeve. The alphabetic representations illustrate a selected musical key, a chromatic scale, a major chord and a minor chord associated with the musical key. Providing the second portion with a first series of markings. The first markings is sized and shaped to be visible through the second set of openings in the outer sleeve as the slide member is moved through the outer sleeve. The first markings indicate piano keys associated with the chromatic scale associated with the selected musical key. Moving the slide member within the inner cavity of the outer sleeve to align one of the first series of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key. Displaying the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key through the first series of openings. Displaying the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings. (15) In still a further variant, the method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key further includes the step of providing the second set of openings in the outer sleeve in a first predetermined shape. (16) In yet a further variant, the method includes the additional steps of: Providing a third set of openings in the outer sleeve. The third set of openings is of a second predetermined shape and located on the representation of a portion of a piano keyboard. Poviding a second set of markings. The second set of markings is located on the second portion of the slide member and positioned so as to indicate the pianos keys associated with a major chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the major chord associated with the selected musical key. (17) In another variant the method includes the additional steps of: Providing a fourth set of openings in the outer sleeve. The fourth set of openings is of a third predetermined shape and located on the representation of a portion of a piano keyboard. Providing a third set of markings. The third set of markings is located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the minor chord associated with the selected musical key. (18) In still another variant, the method includes the additional steps of: Providing a third set and a fourth set of openings in the outer sleeve. The third and fourth sets of openings are of second and third predetermined shapes and located on the representation of a portion of a piano keyboard. Providing a second set and a third set of markings. The second and third sets of markings are located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the minor chord associated with the selected musical key. (19) In yet another variant, the method includes the additional step of providing the first set of markings in a first predetermined color. (20) In a further variant, the method includes the additional steps of: Providing a third set of openings in the outer sleeve. The third set of openings is located on the representation of a portion of a piano keyboard. Providing a second set of markings. The second set of markings is of a second predetermined color and is located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the major chord associated with the selected musical key. (21) In still a further variant, the method includes the additional steps of: Providing a fourth set of openings in the outer sleeve. The fourth set of openings is located on the representation of a portion of a piano keyboard. Providing a third set of markings, The third set of markings is of a third predetermined color and located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the minor chord associated with the selected musical key. (22) In a final variant, the method includes the additional steps of: Providing a third and a fourth set of openings in the outer sleeve. The third and fourth sets of openings are located upon the representation of a portion of a piano keyboard. Providing a second and a third set of markings. The second and third sets of markings are of second and third predetermined colors and located on the second portion of the slide member. The second and third sets of markings are positioned so as to indicate the piano keys associated with a major chord and a minor chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the major and minor chord associated with the selected musical key. An appreciation of the other aims and objectives of the present invention and an understanding of it may be achieved by referring to the accompanying drawings and the detailed description of a preferred embodiment. DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the preferred embodiment of the invention illustrating how the two main components interact FIG. 2 is a plan view of the preferred embodiment of the invention illustrating the operation of the invention FIG. 3 is a plain view of an embodiment that includes a means for preventing the slide member from being removed from the outer sleeve FIG. 4 is a plan view of another embodiment that includes a means for preventing the slide member from being removed from the outer sleeve FIG. 5 is a plan view of an embodiment that includes a means for allowing a user to pull or push the slide member when it is aligned with the edge of the outer sleeve FIG. 6 is a plan view of an embodiment where the second set of openings are of a predetermined shape FIG. 7 is a plan view of an embodiment of the invention that includes a third set of opening and a second series of markings FIG. 8 is a plan view of an embodiment of the invention that includes a fourth set of openings and a third series of markings FIG. 9 is a plan view of an embodiment of the invention that includes both a third and fourth sets of openings and a second and third series of markings FIG. 10 is a plan view of an embodiment of the invention that includes a fifth set of openings and several series of markings that are of predetermined colors FIG. 11 is a plan view of an embodiment of the invention that includes a sixth set of openings and several series of markings that are of predetermined colors and FIG. 12 is a plan view of an embodiment of the invention that includes both a fifth and sixth sets of openings and several series of markings that are of predetermined colors DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT (1) FIGS. 15 illustrate a piano key finder and chord indicator 10 providing the desired features that may be constructed from the following components. As illustrated in FIGS. 1 and 2, means 15 are provided for displaying alphabetic representations 17 of a chromatic scale 20 associated with a selected musical key 25 . Means 30 are provided for displaying alphabetic representations 17 of major 35 and minor 40 chords associated with the selected musical key 25 . Means 45 are provided for indicating piano keys associated with the chromatic scale 20 associated with the selected musical key 25 . (2) In a variant of the invention, an outer sleeve 55 is provided. The outer sleeve 55 is formed of semi-rigid material and has a front surface 60 . a back surface 65 . top 70 and bottom 75 edges, first 80 and second 85 ends and an interior cavity 90 . The interior cavity 90 is open at the first 80 and second 85 ends of the outer sleeve 55 . The outer sleeve 55 has a representation of a portion of a piano keyboard 95 and first 100 and second 105 sets of openings penetrating at least one of the front 60 and rear 65 surfaces. A slide member 110 is provided. The slide member 110 has first 115 and second 120 ends and is sized and shaped to fit slidably within the interior cavity 90 . The slide member 110 has a first portion 125 and a second portion 130 . The first portion 125 carries alphabetic representations 17 . The representations 17 are sized and shaped to be visible through the first set of openings 100 in the outer sleeve 55 as the slide member 110 is moved through the outer sleeve 55 . The alphabetic representations 17 illustrate a selected musical key 25 . a chromatic scale 20 . a major chord 35 and a minor chord 40 associated with the musical key 25 . The second portion 130 has a first series of markings 140 . The first markings 140 are sized and shaped to be visible through the second set of openings 105 in the outer sleeve 55 as the slide member 110 is moved through the outer sleeve 55 . The first markings 140 indicate piano keys associated with the chromatic scale 20 associated with the selected musical key 25 . When a user moves the slide member 110 within the interior cavity 90 of the outer sleeve 55 . aligning one of the first set of openings 100 in the outer sleeve 55 with one of the alphabetic representations 17 illustrating a selected musical key 25 . the alphabetic representations 17 for each note of the chromatic scale 20 as well as major 35 and minor 40 chords associated with that selected musical key 25 will be visible through the first set of openings 100 and the first markings 140 indicating the piano keys associated with the chromatic scale 20 will be visible through the second set of openings 105 . (3) In another variant, as illustrated in FIGS. 3 and 4, the piano key finder and chord indicator 10 further includes means 145 for preventing the slide member 10 from being removed from the outer sleeve 55 . (4) In yet another variant, as illustrated in FIGS. 3 and 4, the means 145 for preventing the slide member 110 from being removed from the outer sleeve 55 further includes first 150 and second 155 enlarged end sections. The enlarged end sections 150 . 155 are attached at the first 115 and second 120 ends of the slide member 110 . The enlarged end sections 150 . 155 are sized and shaped to prevent their passage through the interior cavity 90 . When the slide member 110 is moved through the interior cavity 90 to permit alignment of the alphabetic representations 17 with the first the series of openings 100 . the slide member 110 will remain permanently and slidably attached to the outer sleeve 55 . (5) In still another variant, as illustrated in FIG. 5, at least one finger notch 160 is provided. The finger notch 160 is located at either of the first 80 and second 85 ends of the outer sleeve 55 . When the first end 115 of the slide member 110 is aligned with the first end of the outer sleeve 55 . the finger notch 160 will permit the slider member 110 to be either pulled from or pushed into the outer sleeve 55 . (6) In a further variant of the invention, as illustrated in FIG. 6, the second set of openings 105 in the outer sleeve 55 are of a first predetermined shape 170 . (7) In still a further variant, as illustrated in FIG. 7, a third set of openings 175 in the outer sleeve 55 is provided. The third set of openings 175 is of a second predetermined shape 180 and located on the representation of a portion of a piano keyboard 95 . A second series of markings 185 is provided. The second series of markings 185 is located on the second portion 130 of the slide member 110 and positioned so as to indicate the piano keys associated with a major chord 35 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 . (8) In another variant, as illustrated in FIG. 8, a fourth set of openings 190 in the outer sleeve 55 is provided. The fourth set of openings 190 is of a third predetermined shape 195 and located on the representation of a portion of a piano keyboard 95 . A third series of markings 200 is provided. The third set series of markings 200 is located upon the second portion 130 of the slide member 110 and positioned so as to indicate the piano keys associated with a minor chord 40 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 . (9) In yet another variant, as illustrated in FIG. 9, a third 175 and a fourth 190 set of openings in the outer sleeve 55 are provided. The third set of openings 175 is of a second predetermined shape 180 . the fourth set of openings 190 is of a third predetermined shape 195 . The third 175 and fourth 190 set of openings are located upon the representation of a portion of a piano keyboard 95 . Second 185 and third 200 series of markings are provided. The second 185 and third 200 sets of markings are located on the second portion 130 of the slide member 110 and positioned so as to indicate the piano keys associated with a major chord 35 and a minor chord 40 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 . (10) In still another variant, as illustrated in FIG. 10, the first series of markings 140 are of a first predetermined color 220 . (11) In still a further variant, as illustrated in FIG. 10, a fifth set of openings 235 in the outer sleeve 55 is provided. The fifth set of openings 235 is located on the representation of a portion of a piano keyboard 95 . A fourth series of markings 240 is provided. The fourth series of markings 240 are of a second predetermined color 225 and is located upon the second portion 130 of the slide member 110 and positioned so as to indicate piano keys associated with a major chord 35 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 . (12) In yet a further variant of the invention, as illustrated in FIG. 11, a sixth set of openings 245 in the outer sleeve is provided. The sixth set of openings 245 is located on the representation of a portion of a piano keyboard 95 . A fifth series of markings 215 are provided. The fifth series of markings 215 are of a third predetermined color 230 . The markings are located upon the second portion 130 of the slide member 110 and positioned so as to indicate the piano keys associated with a minor chord 40 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 . (13) In still a further variant, as illustrated in FIG. 12, fifth 235 and a sixth 245 set of openings in the outer, sleeve 55 are provided. The fifth 235 and a sixth 245 sets of openings are located on the representation of a portion of a piano keyboard 95 . A fourth 240 and a fifth 215 series of markings 200 are provided. The fourth 240 and a fifth 215 series of markings are of second 225 and third 230 predetermined colors and located on the second portion 130 of the slide member 110 . The fourth 240 and a fifth 215 series of markings are positioned so as to indicate the piano keys associated with a major chord 35 and a minor chord 40 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 .