Digital Computer Electronics problems
- 1. A bus is a group of _____ carrying digital signals.
Options- A. wires
- B. gates
- C. transistors
- D. registers
- E. None of the above Discuss
Correct Answer: wires
- 2. The ALU carries out arithmetic and logic operations. It processes _____ numbers rather than decimal numbers.
Options- A. decimal
- B. hexadecimal
- C. binary
- D. All of the above
- E. None of the above Discuss
Correct Answer: binary
- 3. The hexadecimal digits are 0 to 9 and A to _____
Options- A. E
- B. F
- C. G
- D. D
- E. None of the above Discuss
Correct Answer: F
- 4. A combinational logic circuit which is used when it is desired to send data from two or more source through a single transmission line is known as
Options- A. encoder
- B. decoder
- C. multiplexer
- D. demultiplexer
- E. None of the above Discuss
Correct Answer: multiplexer
- 5. The simplified form of the Boolean expression (X + Y + XY)(X + Z) is
Options- A. X + Y + Z
- B. XY + YZ
- C. X + YZ
- D. XZ + Y
- E. None of the above Discuss
Correct Answer: X + YZ
- 6. The functional difference between SR flip-flop and JK flip-flop is that
Options- A. JK flip-flop is faster than SR flip-flop
- B. JK flip-flop has a feed back path
- C. JK flip-flop accepts both inputs 1
- D. JK flip-flop does not require external clock
- E. None of the above Discuss
Correct Answer: JK flip-flop accepts both inputs 1
- 7. An OR gate has 6 inputs. What is the only input word that produces a 0 output?
Options- A. 000000
- B. 000111
- C. 111000
- D. 111111
- E. None of the above Discuss
Correct Answer: 000000
- 8. Digital design often starts by constructing a _____ table.
Options- A. Standard
- B. Two-stage
- C. Truth
- D. Two-dinensional
- E. None of the above Discuss
Correct Answer: Truth
- 9. A _____ TTL device can sink up to 16mA and can source up to 400 MA.
Options- A. Low-power
- B. high-power
- C. Standard
- D. Schottky
- E. None of the above Discuss
Correct Answer: Standard
- 10. With a NAND latch a low R and a low S produce a _____ condition.
Options- A. race
- B. set
- C. reset
- D. no change
- E. None of the above Discuss
Correct Answer: race
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