combinational circuit
Combinational circuit has no memory. It means the present output of the circuit is not depending on the previous input.
COMBINATIONAL CIRCUIT CHARACTERISTIC
Memory less. fast Not complex Independent No feedback element Doesn’t required clock signal
EXAMPLE OF COMBINATIONAL CIRCUIT
Adder, Subtractor, Converter, Encoder/Decoder.
COMBINATIONAL CIRCUITS TYPES
Arithmetic and logic circuit
Data manipulation
Code converter
ADDER CIRCUIT
1. Half adder
2. Full adder
HALF ADDER
Half adder is a combination of logic adder circuit with two inputs and two outputs. The inputs are A & B, and outputs are carry (C) other is sum (S).
FULL ADDER
Full adder is a combination of logic adder circuit. It is also constructed by the cascaded of two half adder. It is founded in arithmetic and logic units.