Counter

Details Counter Counter

1976-08-17

1977-07-19

Thesz, Joseph M.

Registers

Platform operated

Platform actuated traffic counters

235 92PE, 235 92GT, 235 92R, 307220R, H03K 2136

Patent

active

040370852

ABSTRACT:
A counter particularly useful for a program counter comprising a plurality of logic units representative of digits of information data being stored in the counter, each logic unit including a flip-flop circuit indicative of the value of each digit, an exclusive OR circuit connected with the input of the flip-flop circuit and an OR circuit connected with an input of the exclusive OR circuit, the output of the flip-flop circuit being connected to another input of the exclusive OR circuit. A control signal and a carry signal are supplied to the inputs of the OR circuit of an associated one logic unit. The least significant digit logic unit lacks an OR circuit since no carry signal is supplied thereto so that a least significant digit control signal is directly supplied to one input of the exclusive OR circuit of the least significant digit logic unit.

REFERENCES:
patent: 3145293 (1964-08-01), Homan
patent: 3632997 (1972-01-01), Froemke
patent: 3634658 (1972-01-01), Brown

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