(under subclass 64) Subject matter where means are included to control the direction in which information can be transferred through the register.
SEE OR SEARCH THIS CLASS, SUBCLASS:
45, for counting systems including reversible counters.
61+, for signal direction control in charge transfer device registers or counters.
85, for reversible electromechanical counters.
123, for pulse counting or dividing chains of the reversible counter type using only three electrode semiconductor-type bistable regenerative trigger circuits.
125, for reversible counting or dividing chains using bistable regenerative trigger circuits in general.
126, for reversible counting and dividing chains in general.
