Digital Concepts problems
- 1. Give the decimal value of binary 10010.
Options- A. 610
- B. 910
- C. 1810
- D. 2010 Discuss
Correct Answer: 1810
- 2. How many binary bits are necessary to represent 748 different numbers?
Options- A. 9
- B. 7
- C. 10
- D. 8 Discuss
Correct Answer: 10
- 3. Convert the fractional binary number 10010.0100 to decimal.
Options- A. 24.50
- B. 18.25
- C. 18.40
- D. 16.25 Discuss
Correct Answer: 18.25
- 4. In a certain digital waveform, the period is four times the pulse width. The duty cycle is ________.
Options- A. 0%
- B. 25%
- C. 50%
- D. 100% Discuss
Correct Answer: 25%
- 5. The output of an OR gate is LOW when ________.
Options- A. all inputs are LOW
- B. any input is LOW
- C. any input is HIGH
- D. all inputs are HIGH Discuss
Correct Answer: all inputs are LOW
- 6. Serial format means digital signals are:
Options- A. sent over many conductors simultaneously.
- B. sent over one conductor sequentially.
- C. sent in groups of eight signals.
- D. sent in binary coded decimal. Discuss
Correct Answer: sent over one conductor sequentially.
- 7. What kind of logic device or circuit is used to store information?
Options- A. Counter
- B. Register
- C. Inverter
- D. Buffer Discuss
Correct Answer: Register
- 8. The generic array logic (GAL) device is ________.
Options- A. one-time programmable
- B. reprogrammable
- C. a CMOS device
- D. reprogrammable and a CMOS device Discuss
Correct Answer: reprogrammable
- 9. A multiplexer has ________.
Options- A. one input and several outputs
- B. one input and one output
- C. several inputs and several outputs
- D. several inputs and one output Discuss
Correct Answer: several inputs and one output
- 10. Parallel format means that:
Options- A. each digital signal has its own conductor.
- B. several digital signals are sent on each conductor.
- C. both binary and hexadecimal can be used.
- D. no clock is needed. Discuss
Correct Answer: each digital signal has its own conductor.
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