Carry skip adder with independent carry-in and carry skip paths

Details Carry skip adder with independent carry-in and carry skip paths Carry skip adder with independent carry-in and carry skip paths

1993-03-05

1994-08-09

Mai, Tan V.

Boots, shoes, and leggings

364786, G06F 750

Patent

active

053372697

ABSTRACT:
A carry skip adder uses independent paths for propagating a skip carry bit and a carry-in bit. Propagation of the carry-in bit is inhibited during a first portion of the clock cycle to prevent spurious carry-in signals from affecting the operation. During this period, other logic functions may be performed, including calculation of the propagation bits and generate bits for each adder block.

REFERENCES:
patent: 4556948 (1985-12-01), Mercy
patent: 4737926 (1988-04-01), Vo et al.
patent: 4764887 (1988-08-01), Lai et al.
patent: 5146424 (1992-09-01), Peterson et al.
Computer Arithmetic, Chapter A.8 Speeding Up Integer Addition, "Carry Lookahead", pp. A-32 to A-37.

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