LOGIC GATES/CIRCUITS 1 - DEFINITION, TYPES, SYMBOLS AND USES
LOGIC GATES/CIRCUITS 1 DEFINITION, TYPES, SYMBOLS AND USES DEFINITION OF LOGIC GATE A logic gate is the fundamental building block of digital integrated circuits. Most logic gate takes an input of two binary values, and output a single value of 1 or 0. Some circuits may have only a few logic gates, while others, such as microprocessors, may have millions of them. Logic gates are primarily implemented using diodes or transistors acting as electronic switches, but can also be constructed using vacuum tube, fluidic logic, optics, molecules or even mechanical elements. Logic circuit includes such devices as registers, arithmetic logic units, and computer memory, all the way up through complete microprocessors, which may contain more than 100 million gates. Equation and truth table for each logic gate The truth table is the table that shows the possible combinations of variable values in the equation and the result (output) for each of the logic gates. For a two-input tru...