Home » LOGIC GATES » LOGIC GATES AND ITS TYPES

# INTRODUCTION OF LOGIC GATES

Binary logic deals with binary variables and with operations that assume a logical meaning.It is used to describe, in algebraic or tabular form, the manipulation of processing of binary information.The manipulation of binary information is done by logic circuits called gates. Gates are blocks of hardware that produce signals of binary 1 or 0 when input logic requirement are satisfied. A variety of logic gates are commonly used in digital computer system. Each gate has a distinct graphic symbol and its operation can be described by means of an algebraic expression. The input-output relationship of the binary variables for each gate can be represented in tabular form by a truth table. The basic logic gates are AND, Inclusive OR with multiple inputs and NOT with a single input. Each gate with more than one input is sensitive to either logic 0 or logic 1 input at any one of its input, generating the output according to its function.

## DEFINITION OF GATES

All operations within a computer are carried out by means of combinations of signals passing through standard blocks of built-in circuit that are known as logic gates. In other words, a logic gate is simply an electronic circuit which operates on one or more input singles.

### TYPES OF GATES

There are eight types of logic gates which can generate different outputs for the inputs. They can have any number of inputs lines but they have always a single output line. These eight logic gates as:

### Related Posts

• XOR GATE (EXCLUSIVE-OR) The exclusive-OR gate is a logic gate which has a graphic symbol similar to the OR gate except for the additional curved line on the input side. The output of this gate is 1 if anyone […] Posted in LOGIC GATES
• XNOR GATE (EXCLUSIVE-NOR GATE) XNOR gate is the complement of the exclusive-OR gate. It is obtained by adding a NOT gate next to a XOR gate. The NOT gate is indicated by a small circle in the block diagram given here. […] Posted in LOGIC GATES
• NOR GATE A NOR gate is a complemented OR gate, as indicated by the circuit diagram, which consist of an OR gate and followed by a small circle or NOT gate. That is, the output of a NOR gate will […] Posted in LOGIC GATES
• OR GATE An OR gate is the physical realization of the logical additionÂ (OR) operation. That is, it is an electrical circuit that generates an output signal of 1 only if any of the input signals is […] Posted in LOGIC GATES