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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Familiarisation of ICs.

If any two inputs of 3 input ExOR gate are high then output will be ______.

a: 0 b: 1 c: Either 0 or 1 d: None of these

The incorrect input and output lines combination in IC 74266

a: Input-1,2 Output- 3 b: Input- 4,5 Output- 6 c: Input-8,9 Output- 10 d: Input- 12,13 Output- 11

The 2 input NOR gate output will be high if the inputs are __________.

a: 00 b: 01 c: 10 d: 11

A logic probe is used to test the pins of a 7411 IC with the following results. Is there a problem with the chip and if so, what is the problem?

a: Pin 6 should be ON. b: Pin 6 should be pulsing. c: Pin 8 should be ON d: No problem

If a 3-input OR gate has eight input possibilities, how many of those possibilities will result in a HIGH output?

a: 1 b: 2 c: 7 d: 8

To build 4 to 1 multiplexer _________IC is required.

a: 7432 b: 7404 c: 7408 d: All of the above

Match the logic gates in Column A with their equivalents in Column B.

a: P – 2, Q – 4, R – 1, S – 3 b: P – 4, Q – 2, R – 1, S – 3 c: P – 2, Q – 4, R – 3, S – 1 d: P – 4, Q – 2, R – 3, S – 1

For the output F to be 1 in the logic circuit shown, the input combination should be

a: A = 1, B = 1, C = 0 b: A = 1, B = 0, C = 0 c: A = 0, B = 1, C = 0 d: A = 0, B = 0, C = 1

The output Y in the circuit below is always ‘1’, when

a: Two or more of the inputs P,Q, R are ‘0 b: Two or more of the inputs P,Q, R are ‘1’ c: Any odd number of the inputs P,Q,R is ‘0 d: Any odd number of the inputs P,Q,R is ‘1’

In the figure, the LED

a: Emits light when both S₁ and S₂ are closed. b: Emits light when both S₁ and S₂ are open. c: Emits light when only one of S₁ or S₂ is closed. d: Does not emit light, irrespective of the switch positions.

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