(under subclass 82) Subject matter where, in one mode, successive pulses cause the counter to count upward and in another mode cause the counter to count downward.
SEE OR SEARCH THIS CLASS, SUBCLASS:
45, for counting systems including a reversible counter.
69, for shift registers in general having direction control of pulse signals.
SEE OR SEARCH CLASS
708, Electrical Computers: Arithmetic Processing and Calculating,
672, for incrementing and decrementing in computational devices and systems.
