Digital counters are integrated circuits used for counting events in computers and other digital systems

Counter and timer boards are computer cards that perform digital counting and/or timing functions

Binary adders are digital devices that are capable of adding binary numbers.

Digital comparators are circuits used to compare the magnitude of two binary quantities and to determine the relationship of those quantities

Shift registers are sequential logic circuits that are used to store and move data.

Arithmetic logic units (ALU) perform arithmetic and logic operations on binary data inputs.

Monostable multivibrators, also known as one-shots, are digital devices similar to flip-flops, but with only one stable state where they remain until triggered by an input signal.