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Question
A push-button switch is used to input data to a register. The output of the register is erratic. What could be causing the problem?
Options
A. The power supply is probably noisy.
B. The switch contacts are bouncing.
C. The socket contacts on the register IC are corroded.
D. The register IC is intermittent and failure is imminent.
Correct Answer
The switch contacts are bouncing.
More questions
1. PALs tend to execute ________ logic.
Options
A. SAP
B. SOP
C. PLA
D. SPD
Show Answer
Scratch Pad
Discuss
Correct Answer: SOP
2. 34FC + AD31 = ________.
Options
A. E22D
B. E31D
C. E21D
D. E42D
Show Answer
Scratch Pad
Discuss
Correct Answer: E22D
3. A decimal 11 in BCD is ________.
Options
A. 00001011
B. 00001100
C. 00010001
D. 00010010
Show Answer
Scratch Pad
Discuss
Correct Answer: 00010001
4. Convert the following BCD number to decimal.
010101101001
bcd
Options
A. 539
B. 2551
C. 569
D. 1552
Show Answer
Scratch Pad
Discuss
Correct Answer: 569
5. Parallel transmission is faster than serial.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
6. The complement of 1 is 0.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
7. Digital signal processing must be at least half as fast as the incoming signal to be processed.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
8. In the keypad HDL encoder, NANDing of the columns is used to activate the freeze bit.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
9. Resolution in the analog output of a DAC is primarily dependent on the number of input binary bits.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
10. The carry-out of a binary adder is identified using the summation symbol, sigma.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
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