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Digital Electronics
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Digital Arithmetic Operations and Circuits
Comments
Question
What are the two types of basic adder circuits?
Options
A. sum and carry
B. half-adder and full-adder
C. asynchronous and synchronous
D. one- and two's-complement
Correct Answer
half-adder and full-adder
Digital Arithmetic Operations and Circuits problems
Search Results
1. Solve this binary problem:
Options
A. 11001001
B. 10010000
C. 01101110
D. 01110110
Show Answer
Scratch Pad
Discuss
Correct Answer: 10010000
2. Convert the decimal numbers 275 and 965 to binary-coded decimal (BCD) and add. Select the BCD code groups that reflect the final answer.
Options
A. 1101 1110 1010
B. 1110 1010 1110
C. 0001 0010 0100 0000
D. 0010 0011 0100 0000
Show Answer
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Discuss
Correct Answer: 0001 0010 0100 0000
3. Multiply the following binary numbers.
1010
1011
1001
×0011
×0111
×1010
Options
A. 0001 1110 0100 1101 0101 1011
B. 0001 1110 0100 1100 0101 1010
C. 0001 1110 0100 1101 0101 1010
D. 0001 1101 0100 1101 0101 1010
Show Answer
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Discuss
Correct Answer: 0001 1110 0100 1101 0101 1010
4. Add the following hexadecimal numbers.
3C
14
3B
+25
+28
+DC
Options
A. 60 3C 116
B. 62 3C 118
C. 61 3C 117
D. 61 3D 117
Show Answer
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Correct Answer: 61 3C 117
5. A full-adder adds ________.
Options
A. two single bits and one carry bit
B. two 2-bit binary numbers
C. two 4-bit binary numbers
D. two 2-bit numbers and one carry bit
Show Answer
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Correct Answer: two single bits and one carry bit
6. What is the first thing you will need if you are going to use a macrofunction?
Options
A. A complicated design project
B. An experienced design engineer
C. Good documentation
D. Experience in HDL
Show Answer
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Correct Answer: Good documentation
7. Binary subtraction of a decimal 15 from 43 will utilize which two's complement?
Options
A. 101011
B. 110000
C. 011100
D. 110001
Show Answer
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Discuss
Correct Answer: 110001
8. The selector inputs to an arithmetic/logic unit (ALU) determine the:
Options
A. selection of the IC
B. arithmetic or logic function
C. data word selection
D. clock frequency to be used
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Correct Answer: arithmetic or logic function
9. How many basic binary subtraction operations are possible?
Options
A. 4
B. 3
C. 2
D. 1
Show Answer
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Discuss
Correct Answer: 4
10. Using 4-bit adders to create a 1See Section 6-bit adder:
Options
A. requires 16 adders.
B. requires 4 adders.
C. requires the carry-out of the less significant adder to be connected to the carry-in of the next significant adder.
D. requires 4 adders and the connection of the carry out of the less significant adder to the carry-in of the next significant adder.
Show Answer
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Discuss
Correct Answer: requires 4 adders and the connection of the carry out of the less significant adder to the carry-in of the next significant adder.
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