Digital Concepts problems
- 1. Which of the following is a semiconductor memory?
Options- A. RAM
- B. MAR
- C. CD-ROM
- D. CD Discuss
Correct Answer: RAM
- 2. A periodic digital waveform has a pulse width (tw) of 6 ms and a period (T) of 18 ms. The duty cycle is ________.
Options- A. 3.3%
- B. 33.3%
- C. 6%
- D. 18% Discuss
Correct Answer: 33.3%
- 3. Convert the fractional binary number 0001.0010 to decimal.
Options- A. 1.40
- B. 1.125
- C. 1.20
- D. 1.80 Discuss
Correct Answer: 1.125
- 4. PLCC packages have leads on ________.
Options- A. one side
- B. two sides
- C. three sides
- D. four sides Discuss
Correct Answer: four sides
- 5. Digital signals transmitted on a single conductor (and a ground) must be transmitted in:
Options- A. slow speed.
- B. parallel.
- C. analog.
- D. serial. Discuss
Correct Answer: serial.
- 6. A flip-flop has ________.
Options- A. one stable state
- B. no stable states
- C. two stable states
- D. none of the above Discuss
Correct Answer: two stable states
- 7. Give the decimal value of binary 10000110.
Options- A. 13410
- B. 14410
- C. 11010
- D. 12610 Discuss
Correct Answer: 13410
- 8. The parallel transmission of digital data:
Options- A. is much slower than the serial transmission of data.
- B. requires only one signal line between sender and receiver.
- C. requires as many signal lines between sender and receiver as there are data bits.
- D. is less expensive than the serial method of data transmission. Discuss
Correct Answer: requires as many signal lines between sender and receiver as there are data bits.
- 9. An encoder converts ________.
Options- A. noncoded information into coded form
- B. coded information into noncoded form
- C. HIGHs to LOWs
- D. LOWs to HIGHs Discuss
Correct Answer: noncoded information into coded form
- 10. Any number with an exponent of zero is equal to:
Options- A. zero
- B. one
- C. that number
- D. ten Discuss
Correct Answer: one
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Programming
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