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truth table for half adder and design a logic circuit that will act as half
adder (Using NAND gate only).


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Theory:
In this experiment I am going to design a half adder logic circuit by using NAND gates
in arrangement. And finally I have to write the truth table for the expression of half
adder circuit.
Apparatus:
 Logic trainer
 Power supply
 Jumper wires
 Digital multi meter
Procedure:
 Connect the circuit according to the circuit diagram.
 Use A and B two inputs for a NAND gate.
 Now take a output which is common for next NAND gates.
 Connect input A direct with 2nd NAND and as first input and use the output of first
gate as second input for this gate
 For third NAND gate connect B input direct with second input and common
output of first gate as first input.
 The output of second and third logic gate connect with fourth NAND gate and take
a single output.
 The output of first NAND logic gate connect with fifth NAND gate as once and
take a single output
 Draw a truth table for sum and carry.