04707800 is referenced by 163 patents and cites 9 patents.

An adder/subtractor wherein N/2 two bit adders are connected to allow the addition of numbers having N bits, each one of the two bit adders having associated control circuitry adapted: (a) to cause each two bit adder either to add applied bits directly or to add one applied bit and the "two's complement" of the other bit; and (b) to electrically separate any selected ones of the two bit adders from the others.

Title
Adder/substractor for variable length numbers
Application Number
6/708185
Publication Number
4707800
Application Date
March 4, 1985
Publication Date
November 17, 1987
Inventor
Edward T Lewis
Sudbury
MA, US
Dale L Montrone
Londonderry
NH, US
Agent
Philip J McFarland
Assignee
Raytheon Company
MA, US
IPC
G06F 7/38
G05F 7/50
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