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Digital Electronics
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Digital Arithmetic Operations and Circuits
Comments
Question
Solve this binary problem:
Options
A. 11001001
B. 10010000
C. 01101110
D. 01110110
Correct Answer
10010000
Digital Arithmetic Operations and Circuits problems
Search Results
1. 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
Scratch Pad
Discuss
Correct Answer: 0001 0010 0100 0000
2. 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
Scratch Pad
Discuss
Correct Answer: 0001 1110 0100 1101 0101 1010
3. 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
4. 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
Scratch Pad
Discuss
Correct Answer: two single bits and one carry bit
5. When performing subtraction by addition in the 2's-complement system:
Options
A. the minuend and the subtrahend are both changed to the 2's-complement.
B. the minuend is changed to 2's-complement and the subtrahend is left in its original form.
C. the minuend is left in its original form and the subtrahend is changed to its 2's-complement.
D. the minuend and subtrahend are both left in their original form.
Show Answer
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Discuss
Correct Answer: the minuend is left in its original form and the subtrahend is changed to its 2's-complement.
6. 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
Show Answer
Scratch Pad
Discuss
Correct Answer: half-adder and full-adder
7. 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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Discuss
Correct Answer: Good documentation
8. 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
9. 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
Show Answer
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Discuss
Correct Answer: arithmetic or logic function
10. How many basic binary subtraction operations are possible?
Options
A. 4
B. 3
C. 2
D. 1
Show Answer
Scratch Pad
Discuss
Correct Answer: 4
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