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Adder&Subtractor

The document outlines experiments for realizing half adder, full adder, half subtractor, and full subtractor circuits using specific ICs and a digital trainer kit. It includes the necessary components, theoretical background, procedures for setting up the circuits, and truth tables for each circuit type. The results confirm the successful realization of both adder and subtractor circuits.

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EEE digital
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8 views4 pages

Adder&Subtractor

The document outlines experiments for realizing half adder, full adder, half subtractor, and full subtractor circuits using specific ICs and a digital trainer kit. It includes the necessary components, theoretical background, procedures for setting up the circuits, and truth tables for each circuit type. The results confirm the successful realization of both adder and subtractor circuits.

Uploaded by

EEE digital
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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DEPARTMENT OF BVOC AUTO

EXP NO: HALF ADDER AND FULL ADDER

AIM:

To realise half adder and full adder.

COMPONENTS REQUIRED:

IC 7486, 7408, 7432, Digital trainer kit and connecting wires

THEORY:

The simplest binary adder is called a half adder. It has two input bits and two output bits. One output bit is
the sum and the other is the carry. They are represented by the sum and carry respectively in the logic
symbol. A half adder has no provision to add a carry from the lower adder bit when binary numbers are
added. Full adder has provision to add a carry from the lower adder bit when binary numbers are added .It
used to add three binary bits.

PROCEDURE:

 Verify whether all the components and wires are in good condition.
 Set up the half adder circuit and feed the input bit combination
 Observe the output corresponding to input combination and enter it in the truth table.

CIRCUIT DIAGRAM

FAROOK COLLEGE
DEPARTMENT OF BVOC AUTO

HALF ADDER TRUTH TABLE

A B SUM CARRY

0 0 0 0

0 1 1 0

1 0 1 0

1 1 0 1

FULL ADDER TRUTH TABLE

A B Cin SUM CARRY

0 0 0 0 0

0 0 1 1 0

0 1 0 1 0

0 1 1 0 1

1 0 0 1 0

1 0 1 0 1

1 1 0 0 1

1 1 1 1 1

RESULT

Realised the half adder and full adder.

FAROOK COLLEGE
DEPARTMENT OF BVOC AUTO

EXP NO: HALF SUBTRACTOR AND FULL SUBTRACTOR

AIM:

To realise half subtractor and full subtractor circuits

COMPONENTS AND EQUIPMENTS REQUIRED:

Digital trainer kit, IC 7486, 7404, 7408, 7432 and connecting wires.

THEORY:

The simplest binary subtracter is called a half subtracter . It has two input bits and two output bits. One
output bit is the Difference and the other is the borrow. They are represented by the difference and
borrow respectively in the logic symbol. Full subtracter has provision to borrow from the lower adder bit
when binary numbers are subtracted .It used to subtract three binary bits.

PROCEDURE:

 Verify whether all the components and wires are in good condition.
 Set up the half subtractor circuit and feed the input bit combination
 Observe the output corresponding to input combination and enter it in the truth table.

CIRCUIT DIAGRAM

FAROOK COLLEGE
DEPARTMENT OF BVOC AUTO

HALF SUBTRACTOR TRUTH TABLE

A B DIFFERENCE BORROW

0 0 0 0

0 1 1 1

1 0 1 0

1 1 0 0

FULL SUBTRACTOR TRUTH TABLE

A B Bin DIFFERENCE BORROW

0 0 0 0 0

0 0 1 1 1

0 1 0 1 1

0 1 1 0 1

1 0 0 1 0

1 0 1 0 0

1 1 0 0 0

1 1 1 1 1

RESULT

Realised half subtractor and full subtractor circuits.

FAROOK COLLEGE

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