Full adder/subtractor circuit employing exclusive OR logic

Details Full adder/subtractor circuit employing exclusive OR logic Full adder/subtractor circuit employing exclusive OR logic

1976-10-27

1978-01-31

Malzahn, David H.

Boots, shoes, and leggings

G06F 750

Patent

active

040719057

ABSTRACT:
A binary full adder/subtractor circuit includes an exclusive OR gate operating upon augend/minuend and addend/subtrahend binary input signals. The sum/difference output from the circuit is the carry/borrow input signal or its inverse depending upon the output state of the exclusive OR gate. The carry/borrow output of the circuit comprises either the carry/borrow input or the addend/subtrahend input, as determined by the output of the exclusive OR gate and by an operation (sum/difference) specifying input signal.

REFERENCES:
patent: 3612847 (1971-10-01), Jorgensen
patent: 3843876 (1974-10-01), Fett et al.
patent: 3919536 (1975-11-01), Cochran et al.
patent: 3932734 (1976-01-01), Parsons

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