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Digital Electronics
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Number Systems and Codes
Comments
Question
An unweighted code in which only one bit changes from one code number to the next is ________.
Options
A. BCD
B. Excess-3
C. Gray
D. ASCII
Correct Answer
Gray
Number Systems and Codes problems
Search Results
1. Decimal 474 is ________ in BCD.
Options
A. 0100 0111 0100
B. 0100 1011 0101
C. 0100 1001 0011
D. 0110 1011 1001
Show Answer
Scratch Pad
Discuss
Correct Answer: 0100 0111 0100
2. Hexadecimal 44 is ________ in decimal.
Options
A. 68
10
B. 74
10
C. 77
10
D. 98
10
Show Answer
Scratch Pad
Discuss
Correct Answer: 68
10
3. The largest BCD number that can be represented with four binary bits is ________.
Options
A. 9
B. 10
C. 15
D. 16
Show Answer
Scratch Pad
Discuss
Correct Answer: 9
4. The decimal fraction 1/4 can be written in binary as________.
Options
A. 0.010
B. 0.100
C. 0.110
D. 0.011
Show Answer
Scratch Pad
Discuss
Correct Answer: 0.010
5. Each hexadecimal digit converts to ________ binary digits.
Options
A. four
B. eight
C. 12
D. six
Show Answer
Scratch Pad
Discuss
Correct Answer: four
6. The decimal equivalent of the BCD number 1010 is ________.
Options
A. 8
B. 10
C. 12
D. invalid
Show Answer
Scratch Pad
Discuss
Correct Answer: invalid
7. Hexadecimal 44 is ________ in binary.
Options
A. 01000100
B. 10011010
C. 01011000
D. 10001100
Show Answer
Scratch Pad
Discuss
Correct Answer: 01000100
8. Hexadecimal 16 is ________ in decimal.
Options
A. 32
10
B. 22
10
C. 25
10
D. 27
10
Show Answer
Scratch Pad
Discuss
Correct Answer: 22
10
9. Hexadecimal AA is ________ in decimal.
Options
A. 165
10
B. 170
10
C. 186
10
D. 176
16
Show Answer
Scratch Pad
Discuss
Correct Answer: 170
10
10. A complete alphanumeric code would include 26 lowercase letters, 26 uppercase letters, 10 numeric digits, 7 punctuation marks, and anywhere from ________ to ________ other characters.
Options
A. 5, 10
B. 10, 15
C. 10, 20
D. 20, 40
Show Answer
Scratch Pad
Discuss
Correct Answer: 20, 40
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