logic gate,truth table ,.....

1. Logic Gate
*A large number of electronic circuits are made up of logic gates. These process signals
which represent true or false.
*There are Three types of basic gate:
Symbol Function Truth table
1.AND Gate:
Y=A.B
2.OR Gate:
Y=A+B
3.NOT Gate:
Z=X’

2. *There are two types of Universal logic gate:
Symbol Function Truth table
1.NAND Gate:
Z= (A.B)’
2.NOR Gate:
Y= (A+B)’

3. Symbol Function Truth table
1.BUFFER Gate:
Y=A
2.XOR Gate:
Y=AB’+A’B
3.XNOR Gate:
C=AB+A’B’