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.
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
universal gates are the ones from which we can design other gates also. for eg. NAND and NOR gates. they help in forming the uniformity in the circuits.
The two categories for logic gates are basic logic gates and universal gates. Gates are identified by their function and universal gates are identified as NAND gate or NOR gate.
Any logic gate from which all other logic gate functions can be derived. The two universal gates are NAND and NOR.
A universal gate is a logic gate that can be used to implement any logic function. The NAND gate and NOR gate are examples of universal gates because any other logic gate can be constructed using only NAND or only NOR gates.
A logic gate composed only of diodes and resistors. The only types are AND gates and OR gates. However the number of layers of logic that can be implemented are severely limited due to losses in these gates.
advantages for and gate
One gate would be the NOT gate.
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.
THE MAIN ADVANTAGE OF THE UNIVERSAL LOGIC GATES IS THAT IT CAN BE USED TO MADE ANT KIND OF LOGIC GATE .......BY USING IT . NAND AND NOR ARE CALLED AS UNIVERSAL GATES ARE USED TO MAKE ANY GAATES AS OR ,AND, XNOR,NOT. logic gates are used in many everyday electronic devices such as tv's, computers and telephones.
and gates or gates nor gates nand gates are the electronics logic gates.
because it is an universal gate that control and repairs other gates.