Real time control for digital computer utilizing real time clock

Details Real time control for digital computer utilizing real time clock Real time control for digital computer utilizing real time clock

1975-01-06

1976-12-21

Nusbaum, Mark E.

Communications: electrical

Digital comparator systems

G06F 918

Patent

active

039991695

ABSTRACT:
The proposed real time clock control of a computer system is implemented as programmer's working register in the central processing unit, instead of as an auxiliary subsystem in the input-output logic. Implemented in this manner, the real time clock is modifiable with memory reference instructions, to facilitate changes in the real time clock overflow interrupt interval and the storage of the real time clock value in a read-write memory.

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patent: 3566386 (1971-02-01), Blauw
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patent: 3678463 (1972-07-01), Peters
patent: 3691531 (1972-09-01), Saltini et al.
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patent: 3789365 (1974-01-01), Jen et al.
patent: 3792438 (1974-02-01), Hurst
patent: 3812472 (1974-05-01), Mahood

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