What is a logic gate? How many types of logic gates and what are they?

Logic Gate

 When a number or sum can be operated through a certain rule, then that rule is called logic. And the circuits which are designed based on these logical principles and have one or more inputs and only one output are called logic gates. A gate is basically a digital circuit. Gates play a key role in modern digital circuit design and analysis. Different types of logic gates are available as separate ICs.

Types of basic logic gates- Logic gates are mainly of three types, namely--

(i) AND Gate,

(ii) OR Gate, 

(iii) NOT Gate. called basic gate. 

AND Gate: AND Gate means a logic circuit, which has two or more inputs and only one output and the output will be High  if all the inputs are High together. Otherwise the output will be low. Here High means '1' and Low means '0'. A OR Gate (OR Gate): It is a logic circuit whose output is high when any of its inputs is high. The output is low only when all inputs are low. It has two or more inputs and a single output. NOT Gate: It is a logic gate whose output is the opposite value of the input. That is, when the input is high, the output is low, and when the input is low, the output is high. And for this feature, it is called a NOT gate-c inverter. It has only one input and only one output.