Digital Concepts problems
- 1. A common instrument used in troubleshooting a digital circuit is a(n) ________.
Options- A. logic probe
- B. oscilloscope
- C. pulser
- D. all of the above Discuss
Correct Answer: all of the above
- 2. A classification of ICs with complexities of 12 to 100 equivalent gates on a chip is known as ________.
Options- A. SSI
- B. MSI
- C. LSI
- D. VLSI Discuss
Correct Answer: MSI
- 3. The holes through a PC board are ________.
Options- A. smaller with SMT than with through-hole mounting
- B. larger with SMT than with through-hole mounting
- C. the same size as with through-hole mounting
- D. usually unnecessary Discuss
Correct Answer: the same size as with through-hole mounting
- 4. Which of the following is not an analog device?
Options- A. Thermocouple
- B. Current flow in a circuit
- C. Light switch
- D. Audio microphone Discuss
Correct Answer: Light switch
- 5. What are the symbols used to represent digits in the binary number system?
Options- A. 0,1
- B. 0,1,2
- C. 0 through 8
- D. 1,2 Discuss
Correct Answer: 0,1
- 6. A DAC changes ________.
Options- A. an analog signal into digital data
- B. digital data into an analog signal
- C. digital data into an amplified signal
- D. none of the above Discuss
Correct Answer: digital data into an analog signal
- 7. What is the typical invalid voltage for a binary signal?
Options- A. 0.7?2.8 volts
- B. 0.8?3 volts
- C. 0.8?2 volts
- D. 0.7?2.5 volts Discuss
Correct Answer: 0.8?2 volts
- 8. Convert the fractional binary number 0000.1010 to decimal.
Options- A. 0.625
- B. 0.50
- C. 0.55
- D. 0.10 Discuss
Correct Answer: 0.625
- 9. Convert the fractional decimal number 6.75 to binary.
Options- A. 0111.1100
- B. 0110.1010
- C. 0110.1100
- D. 0110.0110 Discuss
Correct Answer: 0110.1100
- 10. A type of digital circuit technology that uses bipolar junction transistors is ________.
Options- A. TTL
- B. CMOS
- C. LSI
- D. NMOS Discuss
Correct Answer: TTL
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