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Program Device

IP.com Disclosure Number: IPCOM000097084D
Original Publication Date: 1962-May-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Kuhne, R: AUTHOR [+2]

Abstract

The program mechanism is essentially constituted of two removable discs. Upon these are registered respectively the instructions (program disc) and the parameters used in the operations (constant disc). The latter is selected out of a group of discs which are mounted but of which only one is used in a program. This arrangement is specially useful when the number of programs is limited and when some operations of the programs depend on parameters which assume a certain number of values.

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Program Device

The program mechanism is essentially constituted of two removable discs. Upon these are registered respectively the instructions (program disc) and the parameters used in the operations (constant disc). The latter is selected out of a group of discs which are mounted but of which only one is used in a program. This arrangement is specially useful when the number of programs is limited and when some operations of the programs depend on parameters which assume a certain number of values.

The instructions of the program and the values of the parameters are constituted of binary digits represented by slots in the discs. The reading is effected by sets of photocells. The program disc and the selected constant disc are clutched to the drive shaft. The two discs are driven in synchronism, so that a constant is read when the instruction requires its use. The constant discs have a cut away sector, so that the unused discs do not mask the used one.

The instructions read from the program disc are sent to the program decoding circuits of the computer (not shown). This generates signals for controlling the processing of data registered in the main memory (not shown) and of data read from the constant disc.

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