Precharge arithmetic logic unit

Details Precharge arithmetic logic unit Precharge arithmetic logic unit

1974-02-12

1977-09-20

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307216, 307251, 3401461AG, H03K 1908

Patent

active

040499740

ABSTRACT:
A computing system includes a central processor unit (CPU) in combination with external memory units. The CPU includes, on a single chip, an arithmetic logic unit (ALU), an instruction register, a random access memory and a control system. Interconnection of the functional elements of the CPU is accomplished via sequential use of a common parallel buss. The ALU contains precharged parity and carry propagate circuits which enhance circuit speed. The precharged circuits are formed using conventional insulated-gate-field-effect transistor fabrication techniques.

REFERENCES:
patent: 3252011 (1966-05-01), Zuk
patent: 3439185 (1969-04-01), Gibson
patent: 3560764 (1971-02-01), McDowell
patent: 3601627 (1971-08-01), Booher
patent: 3602705 (1971-08-01), Cricchi
patent: 3604944 (1971-09-01), Gundersen
patent: 3619646 (1971-11-01), Vittoz
patent: 3624423 (1971-11-01), Borgini
patent: 3638047 (1972-01-01), Klein
patent: 3649844 (1972-03-01), Kroos

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