Computer Microprocessor and Assembly Language

21. ____________ memory system which is discussed later can improve matters in this respect:

  1. Data memory
  2. Cache memory
  3. Memory
  4. None of these

Correct answer: (B)
Cache memory

22. ____________ Stores the instruction currently being executed:

  1. Instruction register
  2. Current register
  3. Both a and b
  4. None of these

Correct answer: (A)
Instruction register

23. ____________ Was more common year:

  1. CRT
  2. TTL
  3. Both A and B
  4. None of these

Correct answer: (B)
TTL

24. 34H & AX which operation is performed here:

  1. Input
  2. Output
  3. Progress
  4. None of these

Correct answer: (B)
Output

25. 8254 can operate how many operating modes:

  1. 2
  2. 4
  3. 6
  4. 8

Correct answer: (C)
6

26. 8254 counters can count in the:

  1. Binary
  2. Decimal
  3. Hexadecimal
  4. a & b

Correct answer: (D)
a & b

27. 8254 gate of a counter is to either:

  1. Enable counting
  2. Disable counting
  3. Both
  4. None of these

Correct answer: (C)
Both

28. 8254 programmable timer counter has two inputs signals:

  1. CLK
  2. Gate
  3. Both a & b
  4. None of these

Correct answer: (C)
Both a & b

29. 8254 programmable timer counter has:

  1. 1output signal
  2. 2output signal
  3. 3output signal
  4. 4output signal

Correct answer: (A)
1output signal

30. A ____________ on this pin indicates a memory operation:

  1. Low
  2. High
  3. Medium
  4. None of these

Correct answer: (A)
Low

Previous
Page 3 of 35
Next
Copyright © EngineeringMCQ.com