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- The IBM Card-Programmed Electronic Calculator or CPC was announced by IBM in May 1949. Later that year an improved machine, the CPC-II, was also announced. The original CPC Calculator has the following units interconnected by cables:
* Electronic Calculating Punch
* IBM 604 with reader/punch unit
* Accounting Machine
* IBM 402 or
* The CPC-II Calculator has the following units interconnected by cables:
* Electronic Calculating Punch
* with punch unit
* Accounting Machine
* IBM 407 or
* or
*
* Optional Auxiliary Storage Units (up to 3)
* , each could store 16 decimal numbers with ten digits plus sign. From the IBM Archives: The IBM Card-Programmed Electronic Calculator was announced in May 1949 as a versatile general purpose computer designed to perform any predetermined sequence of arithmetical operations coded on standard 80-column punched cards. It was also capable of selecting and following one of several sequences of instructions as a result of operations already performed, and it could store instructions for self-programmed operation. The Calculator consisted of a Type 605 Electronic Calculating Punch and a Type 412 or 418 Accounting Machine. A Type 941 Auxiliary Storage Unit was available as an optional feature. All units composing the Calculator were interconnected by flexible cables. If desired, the Type 412 or 418, with or without the Type 941, could be operated independently of the other machines. The Type 605 could be used as a Calculating Punch and the punch unit (Type 527) could be operated as an independent gang punch. Customer deliveries of the CPC began in late 1949, at which time more than 20 had been ordered by government agencies and laboratories and aircraft manufacturers. Nearly 700 CPC systems were delivered during the first-half of the 1950s. (en)
- La unidad IBM CPC “Card-Programmed Electronic Calculator” fue anunciada en 1949 como un computador programable, capaz de realizar cualquier secuencia predeterminada de operaciones aritméticas cifradas sobre tarjetas perforadas de 80 columnas. Era capaz también de seleccionar después de varias secuencias, operaciones ya realizadas, por lo que se podían almacenar operaciones para luego realizarlas. Todas las unidades de la CPC estaban conectadas mediante cables flexibles. Las unidades que componen la CPC normalmente eran las siguientes:
* Una unidad IBM 604 (para la CPC) o una unidad IBM 605 (para la CPC II). Con esta unidad lo que se conseguía era poder leer y perforar las tarjetas electrónicas, ejecutar operaciones matemáticas de multiplicación y división, almacenar información en registros y contadores, además de controlar la CPC. Por lo que estamos hablando de la Unidad de Control de la calculadora.
* Una unidad IBM 412 o 418. Esta unidad era una procesadora aritmética. Era capaz de realizar operaciones aritméticas sencilla de sumas y restas, acumulando los datos.
* De forma opcional se podía encontrar una unidad IBM 941, que era una unidad secundaria de almacenamiento de datos. (es)
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- IBM CPC assembly, with IBM 604 module on front (en)
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- IBM Logo 1947 1956.svg (en)
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- IBM Card-Programmed Electronic Calculator (en)
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- Tranzistor calculator (en)
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- The IBM Card-Programmed Electronic Calculator or CPC was announced by IBM in May 1949. Later that year an improved machine, the CPC-II, was also announced. The original CPC Calculator has the following units interconnected by cables:
* Electronic Calculating Punch
* IBM 604 with reader/punch unit
* Accounting Machine
* IBM 402 or
* The CPC-II Calculator has the following units interconnected by cables: From the IBM Archives: (en)
- La unidad IBM CPC “Card-Programmed Electronic Calculator” fue anunciada en 1949 como un computador programable, capaz de realizar cualquier secuencia predeterminada de operaciones aritméticas cifradas sobre tarjetas perforadas de 80 columnas. Era capaz también de seleccionar después de varias secuencias, operaciones ya realizadas, por lo que se podían almacenar operaciones para luego realizarlas. Todas las unidades de la CPC estaban conectadas mediante cables flexibles. Las unidades que componen la CPC normalmente eran las siguientes: (es)
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- IBM CPC (es)
- IBM CPC (en)
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- IBM Card-Programmed Electronic Calculator (en)
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