US PATENT SUBCLASS 377 / 123
.~.~.~ Reversible counter

Current as of: June, 1999
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377 /   HD   ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS

118  DF  PULSE COUNTING OR DIVIDING CHAINS {4}
119  DF  .~ Using bistable regenerative trigger circuits {3}
120  DF  .~.~ Using only semiconductors having at least three electrodes {3}
123.~.~.~ Reversible counter

DEFINITION

Classification: 377/123

Reversible counter:

(under subclass 120) Subject matter where the semiconducting devices are used in the stages of a counter which, in one mode, counts upward and, in another mode, counts downward.

SEE OR SEARCH THIS CLASS, SUBCLASS:

45, for systems including reversible counters.