Arithmetic logic unit capable of having a narrow pitch

Details Arithmetic logic unit capable of having a narrow pitch Arithmetic logic unit capable of having a narrow pitch

1989-03-13

1990-03-27

Harkcom, Gary V.

Boots, shoes, and leggings

G06F 738

Patent

active

049126652

ABSTRACT:
An arithmetic logic unit (ALU) cell, having a narrow pitch for straightforward cascading and integration with a memory array or similar device, also able to efficiently perform AND, NAND, OR, NOR, XOR, XNOR, INVERT, SET and CLEAR operations, and ripple carry addition. The ALU has particular utility in a multiport random access memory (RAM) based multiprocessor.

REFERENCES:
patent: 3767906 (1973-10-01), Pryor
patent: 4349888 (1982-09-01), Smith
patent: 4417314 (1983-11-01), Best
patent: 4541067 (1985-09-01), Whitaker
patent: 4620117 (1986-10-01), Fang
patent: 4622648 (1986-11-01), Whitaker
patent: 4752901 (1988-06-01), Vaughn
patent: 4797808 (1989-01-01), Bellay et al.

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