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Digital Electronics
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Digital Arithmetic Operations and Circuits
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Question
Solve this binary problem:
Options
A. 1001
B. 0110
C. 0111
D. 0101
Correct Answer
0111
Digital Arithmetic Operations and Circuits problems
Search Results
1. What is the correct output of the adder in the given figure, with the outputs in the order:
Options
A. 10111
B. 11101
C. 01101
D. 10011
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Correct Answer: 10111
2. What is the most important operation in binary-coded decimal (BCD) arithmetic?
Options
A. addition
B. subtraction
C. multiplication
D. division
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Correct Answer: addition
3. 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.
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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.
4. How many basic binary subtraction operations are possible?
Options
A. 4
B. 3
C. 2
D. 1
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Correct Answer: 4
5. 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
6. Adding in binary, a decimal 26 + 27 will produce a sum of:
Options
A. 111010
B. 110110
C. 110101
D. 101011
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Correct Answer: 110101
7. What is the difference between a full-adder and a half-adder?
Options
A. Half-adder has a carry-in.
B. Full-adder has a carry-in.
C. Half-adder does not have a carry-out.
D. Full-adder does not have a carry-out.
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Correct Answer: Full-adder has a carry-in.
8. In VHDL, what is a GENERATE statement?
Options
A. The start statement of a program
B. Not used in VHDL or ADHL
C. A way to get the computer to generate a program from a circuit diagram
D. A way to tell the compiler to replicate several components
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Correct Answer: A way to tell the compiler to replicate several components
9. Divide the following binary numbers.
Options
A. 0000 0010 0000 0010 1000 1111
B. 0000 0010 0001 0010 0000 0100
C. 0000 0011 0000 0010 0000 0100
D. 0000 0010 0000 0010 0000 0100
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Correct Answer: 0000 0010 0000 0010 0000 0100
10. An 8-bit register may provide storage for two's-complement codes within which decimal range?
Options
A. +128 to ?128
B. ?128 to +127
C. +128 to ?127
D. +127 to ?127
Show Answer
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Correct Answer: ?128 to +127
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