Selectable eight or twelve digit integrated circuit calculator a

Details Selectable eight or twelve digit integrated circuit calculator a Selectable eight or twelve digit integrated circuit calculator a

1974-04-01

1976-06-22

Fears, Terrell W.

Communications: electrical

Digital comparator systems

3401725, 340174M, G11C 1300

Patent

active

039654591

ABSTRACT:
An integrated circuit calculator which can operate in either a twelve digit or an eight digit mode is provided. A conditional modification circuit modifies some of the memory addresses employed in the twelve digit calculator to provide the eight digit calculator with more random access memory registers than the twelve digit calculator. In the twelve digit calculator, the conditional modification circuit also controls folding of some memory registers in order to minimize the chip area required for the memory cicuitry and control logic.

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