Types of Gate

What is a Logic Gate?

A gate can be defined as a digital circuit that can allow a signal (electric current) to pass or stop. A type of gate that allows a signal to pass through when certain logical conditions are met. Different logic gates have different logical conditions....

Types of Gate

Given Below are the different types of Logic Gates :...

AND Gate(.)

The AND gate gives an output of 1 when if both the two inputs are 1, it gives 0 otherwise. For n-input gate if all the inputs are 1 then 1 otherwise 0.The AND gate operation is similar to the standard multiplication of 1s and 0s.The (.) dot represents the AND operation....

OR Gate(+)

The OR gate gives an output of 1 if either of the two inputs are 1, it gives 0 otherwise. For n-input gate if all the inputs are 0 then 0 otherwise 1.The OR Operation is represented by the +....

NOT Gate(‘)

The NOT gate gives an output of 1 if the input is 0 and vice-versa. It is also known as Inverters. In Boolean algebra NOT operation is represented by bar over the variable such as [Tex]\overline{A}[/Tex]....

XOR Gate

The XOR gate gives an output of 1 if either both inputs are different, it gives 0 if they are same. For n-input gate if the number of input 1 are odd then it gives 1 otherwise 0.For a two-input XOR gate it means that the output is true only if exactly one of the inputs is true....

NAND Gate

The NAND gate (negated AND) gives an output of 0 if both inputs are 1, it gives 1 otherwise. For n-input gate if all inputs are 1 then it gives 0 otherwise 1.The Term “NAND” can be said as “Not AND”....

NOR Gate

The NOR gate (negated OR) gives an output of 1 only if both inputs are 0, it gives 0 otherwise. For n-input gate if all inputs are 0 then it gives 1 otherwise 0.The “NOR” can be said as “NOT OR”....

XNOR Gate

The XNOR gate (negated XOR) gives an output of 1 if both inputs are same and 0 if they are different. For n-input gate if the number of input 1 are even then it gives 1 otherwise odd. The “XNOR” can be said as “Exclusive NOR”....

Buffer Gate

The Buffer is the opposite of the NOT gate, as its output is 1 if its input is 1 and vice-versa....

Universal Logic Gates

Out of the eight logic gates discussed above, NAND and NOR are also known as universal gates since they can be used to implement any digital circuit without using any other gate. This means that every gate can be created by NAND or NOR gates only. Implementation of three basic gates using NAND and NOR gates is shown below –...

Applications of Logic Gates

Given Below are the Applications of logic gates...

Conclusion

In this Article we have gone through Logic Gates, we have seen different types of logic gates with their logical diagrams and truth table, we have also gone through the implementation of Nor and Nand gate and we have seen the applications of the logical gates....

Introduction of Logic Gates – FAQs

What role do logic gates play in communication systems?...