Logic gates how do they work

This ability enables sophisticated systems to be created by interconnecting as many as a million gates within a single chip. All of this with no farm hands and no moving parts. Watson Research Center adds some complementary details: "A logic gate in a microchip is made up of a specific arrangement of transistors.

A MOSFET has three components, or regions: a source region, a drain region and a channel region having a gate over it.

The three regions are arranged horizontally adjacent to one another, with the channel region in the middle. The channel region, on the other hand, is designed to be empty of electrons under normal condition, blocking the movement of current. The larger the gate voltage, the larger is the concentration of electrons in the channel region. The substantial concentration of electrons in the channel provides a path by which the electrons can move easily from the source to the drain. There is movement of charges in the silicon, but there are no mechanical moving parts involved.

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See Subscription Options. Go Paperless with Digital. Get smart. Sign Up. Support science journalism. Knowledge awaits. See Subscription Options Already a subscriber? Create Account See Subscription Options. Let it be any form of electronics you work on, they are the most basic things to be acquainted for. This post will help you understand what are Logic Gates, their types with brief introduction, working principle, applications, advantages and disadvantages.

Logic Gates are the building blocks of Digital Systems. They are basically used to perform logical operations by acting as a switch. Boolean Functions are implemented using Logic Gates. A Logic Gate accepts the input and operates on a required condition. Function of a Logic Gate is expressed using Truth Table. It displays all possible combination of the inputs and a column against each row shows the corresponding output value.

Any number of inputs provided results in a single output with a time delay. To understand the working principle of Logic Gates, let us consider the example of Street Lighting System. The operational condition for the street light to function is as follows:. Contact us: [email protected]. Inertial Nav Do you Know Home. Sunday, November 14, Sign in. Forgot your password?