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*That is, given enough gates, either type of gate is able to mimic the operation of any other gate type.*

If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Donate Login Sign up Search for courses, skills, and videos. Computing Computers and the Internet Computers Logic gates and circuits. Logic gates.

We all love computers. They can do so many amazing things. Within a couple of decades computers have completely revolutionized almost all the aspects of human life. They can do tasks of varying degrees of sophistication, all by just flipping zeros and ones. It is remarkable to see how such a simple action can lead to so much complexity.

Truth Tables. Logic Gates. Multiple Input Gates. Gates and Functions Quiz. Boolean functions may be practically implemented by using electronic gates.

Logic gates and truth tables (con't). ◇ NAND. ◇ NOR. ◇ XOR. ◇ XNOR. X Y. •. XY. X Y. +. X Y Mapping Boolean expressions to logic gates. D. C. A. B. F.

Logic gates are the basic building blocks of any digital system. It is an electronic circuit having one or more than one input and only one output. The relationship between the input and the output is based on a certain logic. A circuit which performs an AND operation is shown in figure. A circuit which performs an OR operation is shown in figure.

*Digital Electronic Circuits and Systems pp Cite as. Unable to display preview.*

A NOR gate is a logic gate which gives a positive output only when both inputs are negative. For example, the first embedded system , the Apollo Guidance Computer , was built exclusively from NOR gates, about 5, in total for the later versions. Today, integrated circuits are not constructed exclusively from a single type of gate.

The AND gate is an electronic circuit which gives a high output only if all its inputs are high. The AND operation is represented by a dot. The OR gate is an electronic circuit which gives a high output if one or more of its inputs are high.

Logic gates process signals which represent true or false. Other terms used for the true and false states are shown in the table, it is best to be familiar with them all. Capital letters are normally used to make it clear that the term refers to a logic gate.

But, how this hardware and software perform such operations is a mysterious puzzle. In order to have a better understanding of such a complex issue, we must have to acquaint ourselves with the term Boolean Logic, developed by George Boole. For a simple operation, computers utilize binary digits rather than digital digits. All the operations are carried out by the Basic Logic gates. This article discusses an overview of what are basic logic gates in digital electronics and their working.

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But, how this hardware and software perform such operations is a mysterious puzzle.

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The truth table clearly shows that the NOR operation is the complement of the OR. Universal Gates: A universal gate is a gate which can implement any Boolean.

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