Pushwheel switches are rotary switches that operate using a rolling wheel.

Rotary coded dual in-line package (DIP) switches are activated by a rotating shaft and have several stop positions.

Math calculation software is used to perform mathematical calculations.

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

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

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.