Anonymous user menu

Half Adder

Half Adder :
A combinational circuit that performs the addition of two bits is called half adder. It needs two input bits that are to be added and produces two output bits that are sum and carry.
The truth table for half adder is:

 x y C S
0 0 0 0
0 1 0 1
1 0 0 1
1 1 1 0

Tips:- Here carry output is 0 unless both input bits are 1.
We can derive simplified boolean function for half adder with the above truth table as :
S = x'y+xy' = x⊕y
C = xy
The half adder can be implemented with an exclusive-OR gate and an AND gate.The logic diagram for this implementation is as below:

   

0Comment

What to read next

Please Go through all these linksW3Schools – HTML Tutorial

DefinitionFiber optics is the technology used to transmit information as pulses of light through strands of fiber made of glass or plastic over long