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We know that gate means an entry point in which or we can enter or exit i.e there is only two option. Similarly Logic gate has only two option or in ON or OFF i.e high or low. so that logic gate called gate.

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15y ago
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13y ago

Because they are based on physical semi-conductor devices, called gates.

Also look at it this way. The flow of electrons of your circuit is directed and controlled by the logical operations that the circuit designer wanted them to follow. Then the devices that control the flow of electrons are called gates. What kind of gates? logic, digital gates operating with low voltages: 0 (no difference in potential) and 1 (voltage applied).

Look at it the same way you'd look at automotive traffic. Different types of gates, depending on their locations, allow the traffic to be directed in desired manners.

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Q: Why logic gates are called gate?
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What is universal logic gate?

universal logic gate is a gate using which you can make all the logic gates there are two such gates NOR gate and NAND gate


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That title of "Universal Gate" is reserved for NAND gates because you can build all possible logic using only NAND logic . You can build even other basic logic like AND, OR and NOT using NAND.


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