Electronic calculator or digital processor chip having multiple

Details Electronic calculator or digital processor chip having multiple Electronic calculator or digital processor chip having multiple

1974-11-19

1976-10-26

Malzahn, David H.

Registers

Transfer mechanism

Traveling pawl

G06F 738

Patent

active

039886042

ABSTRACT:
An MOS/LSI semiconductor chip for providing the functions of an electronic calculator or digital processor includes a RAM for data storage, a ROM for program instruction storage, an arithmetic unit for performing operations on data, and control circuitry for defining the functions of the machine in response to instructions from the ROM as well as conditions in the machine and inputs from external. The operation is digit oriented in that in a basic machine a cycle one digit of the RAM is accessed. In the machine cycle the ROM is also addressed to provide an instruction word, and the word is decoded and executed. The output of the arithmetic unit may be coupled to either a one digit accumulator or a one digit RAM address register.

REFERENCES:
patent: 3564226 (1971-02-01), Seligman
patent: 3760171 (1973-09-01), Wang et al.
patent: 3800129 (1974-03-01), Umstuttd
patent: 3863060 (1975-01-01), Rode et al.
patent: 3878514 (1975-04-01), Faber

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