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Published byDamian Gordon Modified over 3 years ago

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sneha

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Gates Gates Characteristics of gates Characteristics of gates Basic Gates Basic Gates AND Gate AND Gate OR gate OR gate NOT gate NOT gate XOR Gate XOR Gate XNOR gate XNOR gate Universal Gate Universal Gate NAND GATE NAND GATE NAND gate as an Universal gate NAND gate as an Universal gate NOR gate NOR gate NOR as an Universal gate NOR as an Universal gate Summary Summary

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Gates are the basic elements of circuit. A gate is a device that performs a basic operation on electrical signals Gates are combined into circuits to perform more complicated tasks. back

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Each logic gate has only one binary output. Each logic gate has either one or more than one binary input(s). back

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There are three basic gates 1 AND gate 2 OR gate 3 NOT gate back

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An AND gate has two or more inputs and only one output. The output of an AND gate is 1 only if all inputs are 1. back

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An OR gate has two or more inputs and only one output. The output of an OR gate is 1 only if one or more inputs are 1. back

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NOT gate has one input and one output. It is also known as inverter. back

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XOR, or exclusive OR, gate ◦ An XOR gate produces 0 if its two inputs are the same, and a 1 otherwise back

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It is also known as equivalence gate. It is combination of XOR and NOT gate. Symbol

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Expression :AB+A’B’ Truth table ABC 001 010 100 111 back

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A universal gate is that gate which apart from its own logical function can also perform the basic gate function i.e AND,OR and NOT. NAND and NOR are universal gate. back

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Nand gate is combination of NOT and AND gate. Symbol Expression :A.B

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ABS 001 011 101 110 back

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A NOT gate can be implemented using a NAND gate (a). An AND gate can be implemented using NAND gates (b). An OR gate can be implemented using NAND gates back

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NOR gate is combination of OR gate and NOT gate. Symbol back

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