Logic gate by sangkirthana

Logic gate

Logic gate

• A gate is digital circuit which either allow a signal pass through it or stop it.
• Its is commonly known as logic gate because it only allows the signal to pass through it only if certain logical condition is satisfied. 

Truth table and Boolean expression

• A table that shows all the possible combination of input and their corresponding output combination for logic gate is called a truth table or table of combination of that logic gate.
• George Boole device different kind of algebra called Boolean algebra deal wit logical statement  which having only 2 value namely either true or false value.
• In Boolean expression 1 denotes a truth statement and 0 denote the false statement
• The three basic operation in Boolean algebra are: 

1.  OR operation
2.  AND operation
3.  NOT operation