ABSTRACT

Relays are probably the oldest means to realize logic operations. Relays, which are electromechanical devices, and their solid-state equivalents (i.e., transistors) are extensively used in many industrial products, such as computers. Relays are conceptually simple and appropriate for introducing physical realization of logic operations. More importantly, the connection configuration of a relay contact network is the same as that of transistors inside a logic gate realized with transistors, in particular MOSFETs (which stands for metal-oxide semiconductor field effect transistors).