Contemporary logic circuits use MOSFETs as the elements to build gates, but there are many ways to implement them. Using relays is one of them, and you can literally see how they work.

When pulsed at their inputs, they change their state. To learn how gates work in a circuit, see Boolean logic. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

SAN JOSE, Calif., Jan. 15, 2015 -- Xilinx, Inc. (NASDAQ: XLNX) today announced that it has delivered the industry's first 4M logic cell device which offers >50M equivalent ASIC gates and 4X more ...