Logic Gates

For centuries mathematicians felt there was a connection between mathematics and logic, but no one before George Boole could find this missing link . In 1854 he invented symbolic logic, known today as Boolean algebra . Each variable in Boolean algebra has either of two values: true or false . The  original purpose of this  two-state algebra was to solve logic problems . 
What is Gate?

A logic circuit with one or more input signals but only one output signal . Gates are digital (two state) circuits because the input and output signals are either low or high voltages . Gates are often called logic circuits because they can be analyzed with Boolean algebra . 

What is circut?
A circuit whose input and output signals are two-state,  either low or high voltages .   

Truth Table: 
A table that shows all input and output possibilities for a logic circuit. The  input words are listed in binary progression .  

Thpes of Basic Logic Gates:
The  basic logic gates are-  
   (i)  OR 
  (ii)  AND  
  (ii)  NOT  gate.  
 

Categories: Computer-Tips