Logic gate

A logic gate is an arrangement of controlled switches used to calculate operations using Boolean algebra in digital circuits. They are primarily implemented electronically but can also be constructed using electromagnetic relays, electronic diodes, fluidics, optical or even mechanical elements.

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While semiconductor electronic logic (see later) is preferred in most applications, relays and switches are still used in some industrial applications and for educational purposes. In this article, the various types of logic gate are illustrated with drawings of their relay-and-switch implementations, although the reader should remember that these are electrically different from the semiconductor equivalents that are discussed later.

Switch: : This article is about electrical switches. For other meanings of the word "switch", see Switch (disambiguation)....

Boolean algebra: :For a basic intro to sets, Boolean operations, Venn diagrams, truth tables, and Boolean applications, see Boolean logic....

Digital circuit: Digital circuits are electric circuits based on a number of discrete voltage levels. In most cases there are two voltage levels: one near to zero volts and one at a higher level depending on the supply voltage in use. These two levels are often represented as L and H....

Logic gate related Images and Photos (experimental)

Logic IV	Gate Guardian	Fuzzy Logic	Open Gate
Blue Gate	Blue Gate	Open Gate	Fuzzy Logic
Fuzzy Logic	Iron Gate	Rose Gate	Green Gate