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.
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