Plus five and invert algorithm

Details Plus five and invert algorithm Plus five and invert algorithm

1975-04-21

1976-11-16

Thesz, Joseph M.

Registers

Platform operated

Platform actuated traffic counters

235 92CM, 235 92CP, 235 92R, G06M 314

Patent

active

039926117

ABSTRACT:
A four bit binary coded decimal (BCD) up/down counter includes a four bit adder and associated logic circuitry configured to feed therethrough the incoming BCD code words as the actual output for the up count and for the down count, add binary 5 to the incoming BCD code word for 1 through 9 and invert each bit of the resulting code words, and feeding the BCD code word for zero directly to the output.

REFERENCES:
patent: 3145293 (1964-08-01), Homan
patent: 3651415 (1972-03-01), Glasson
patent: 3704361 (1972-11-01), Patterson

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