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Physics Practical Experiment - Verification of De Morgan’s Theorems | 12th Physics : Practical

Chapter: 12th Physics : Practical

Verification of De Morgan’s Theorems

To verify De Morgan’s first and second theorems.

VERIFICATION OF DE MORGAN’S THEOREMS

 

AIM:

To verify De Morgan’s first and second theorems.

 

COMPONENTS REQUIRED:

Power Supply (0 – 5V), IC 7400, 7408, 7432, 7404, and 7402, Digital IC trainer kit, connecting wires.

 

FORMULA


 

CIRCUIT DIAGRAM:

De Morgan’s first theorem, De Morgan’s second theorem


 

PROCEDURE:

i) Verification of De Morgan’s first theorem

·        The connections are made for LHS  of the theorem as shown in the circuit diagram using appropriate ICs.

·        The output is noted and tabulated for all combinations of logical inputs of the truth table.

·        The same procedure is repeated for RHS  of the theorem.

·        From the truth table, it can be shown that 

ii) Verification of De Morgan’s second theorem

·        The connections are made for LHS  of the theorem as shown in the circuit diagram using appropriate ICs.

·        The output is noted and tabulated for all combinations of logical inputs of the truth table.

·        The same procedure is repeated for RHS  of the theorem.

·        From the truth table, it can be shown that 

 

OBSERVATION

De-Morgan’s first theorem, De-Morgan’s second theorem


 

RESULT

De Morgan’s first and second theorems are verified.

 

Note

The pin diagram for IC 7408, IC 7432 and IC 7404 can be taken from previous experiment

Precautions

VCC and ground pins must not be interchanged while making connections. Otherwise the chip will be damaged.

For the ICs used, 5V is applied to the pin 14 while the pin 7 is connected to the ground.

 

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