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Combinational Logic Circuits - General Question

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Combinational Logic Circuits - General Questions

1. 

How many outputs would two 8-line-to-3-line encoders, expanded to a 16-line-to-4-line encoder, have?

A. 3
B. 4
C. 5
D. 6

Answer: Option B

Explanation:

No answer description available for this question

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2. 

What is the indication of a short to ground in the output of a driving gate?

A. Only the output of the defective gate is affected.
B. There is a signal loss to all load gates.
C. The node may be stuck in either the HIGH or the LOW state.
D. The affected node will be stuck in the HIGH state.

Answer: Option B

Explanation:

No answer description available for this question

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3. 

Which of the following combinations of logic gates can decode binary 1101?

A. One 4-input AND gate
B. One 4-input AND gate, one OR gate
C. One 4-input NAND gate, one inverter
D. One 4-input AND gate, one inverter

Answer: Option D

Explanation:

No answer description available for this question.

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4. 

When adding an even parity bit to the code 110010, the result is ________.

A. 1110010
B. 1111001
C. 110010
D. 001101

Answer: Option A

Explanation:

No answer description available for this question

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5. 

The design concept of using building blocks of circuits in a PLD program is called a(n):

A. hierarchical design.
B. architectural design.
C. digital design.
D. verilog.

Answer: Option A

Explanation:

No answer description available for this question.

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6. 

The device shown here is most likely a ________.

The device shown here is most likely a ________.

A. comparator
B. multiplexer
C. demultiplexer
D. parity generator

Answer: Option B

Explanation:

No answer description available for this question.

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7. 

What type of logic circuit is represented by the figure shown below?

mcq4_1018_1 (1

A. XOR
B. XNOR
C. XAND
D. XNAND

Answer: Option B

Explanation:

No answer description available for this question

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8. 

A full-adder has a Cin = 0. What are the sum () and the carry (Cout) when A = 1 and B = 1?

A. sigma = 0, Cout = 0
B. sigma = 0, Cout = 1
C. sigma = 1, Cout = 0
D. sigma = 1, Cout = 1

Answer: Option B

Explanation:

No answer description available for this question

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