Digital Arithmetic Operations and Circuits - General Questions (6)

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Digital Arithmetic Operations and Circuits - General Questions

41.

How many inputs must a full-adder have?

A.	4
B.	2
C.	5
D.	3

Answer: Option D

Explanation:

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42.

If B[7..0] = 10100101, what is the value of B[6..2]?

A.	10100
B.	01001
C.	10010
D.	00101

Answer: Option B

Explanation:

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43.

A half-adder circuit would normally be used each time a carry input is required in an added circuit.

A.	True
B.	False

Answer: Option B

Explanation:

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44.

The truth table for a full adder is shown below. What are the values of X, Y, and Z?

mcq6_1008_1

A.	X = 0, Y = 1, Z = 1
B.	X = 1, Y = 1, Z = 1
C.	X = 1, Y = 0, Z = 1
D.	X = 0, Y = 0, Z = 1

Answer: Option B

Explanation:

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45.

What are the two types of basic adder circuits?

A.	sum and carry
B.	half-adder and full-adder
C.	asynchronous and synchronous
D.	one- and two's-complement

Answer: Option B

Explanation:

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46.

The range of positive numbers when using an eight-bit two's-complement system is:

A.	0 to 64
B.	0 to 100
C.	0 to 127
D.	0 to 256

Answer: Option C

Explanation:

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47.

What is the most important operation in binary-coded decimal (BCD) arithmetic?

A.	addition
B.	subtraction
C.	multiplication
D.	division

Answer: Option A

Explanation:

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48.

One way to make a four-bit adder perform subtraction is by:

A.	inverting the output.
B.	inverting the carry-in.
C.	inverting the B inputs.
D.	grounding the B inputs.

Answer: Option C

Explanation:

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Digital Arithmetic Operations and Circuits - General Questions (6)

Digital Arithmetic Operations and Circuits - General Questions

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