SAMPLE:
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Topic: 05.05b, Logic Circuits.
Question Number 1. The 'fan-in' in a gate is the.
Option A. number of inputs to a gate.
Option B. number of outputs from a gate.
Option C. number of inputs and outputs of a gate.
Correct Answer is. number of inputs to a gate.
Question Number 2. What does the logic circuit shown represent?.
Option A. Full Adder Circuit.
Option B. Half adder circuit.
Option C. Multi-bit adder.
Correct Answer is. Full Adder Circuit.
Question Number 3. What would be the outputs of this circuit, if A=0 B=0 C=1.
Option A. 1, 1.
Option B. 0, 1.
Option C. 0, 0.
Correct Answer is. 0, 1.
Explanation. Check out the table on http://www.play-hookey.com/digital/adder.html. http://www.play-hookey.com/digital/adder.html
Question Number 4. What would be the outputs of this circuit, if A=1 B=1 C=0.
Option A. 0, 1.
Option B. 1, 1.
Option C. 1, 0.
Correct Answer is. 1, 0.
Explanation. Check out the table on http://www.play-hookey.com/digital/adder.html. http://www.play-hookey.com/digital/adder.html
Question Number 5. Tristate devices are found.
Option A. on input circuits.
Option B. on output circuits.
Option C. on both input and output circuits.
Correct Answer is. on input circuits.
Question Number 6. A full adder has.
Option A. three inputs and two outputs.
Option B. two inputs and one output.
Option C. three inputs and one output.
Correct Answer is. three inputs and two outputs.
Question Number 7. What is the Boolean Algebra for the circuit shown?.
Option A. .
Option B. .
Option C. .
Correct Answer is. .