Microprocessor Fundamentals problems
- 1. How many buses are connected as part of the 8085A microprocessor?
Options- A. 2
- B. 3
- C. 5
- D. 8 Discuss
Correct Answer: 3
- 2. The ________ ensures that only one IC is active at a time to avoid a bus conflict caused by two ICs writing different data to the same bus.
Options- A. control bus
- B. control instructions
- C. address decoder
- D. CPU Discuss
Correct Answer: address decoder
- 3. I/O mapped systems identify their input/output devices by giving them a(n) ________.
Options- A. 8-bit port number
- B. 16-bit port number
- C. 8-bit buffer number
- D. 8-bit instruction Discuss
Correct Answer: 8-bit port number
- 4. What type of circuit is used at the interface point of an output port?
Options- A. decoder
- B. latch
- C. tristate buffer
- D. none of the above Discuss
Correct Answer: latch
- 5. The items that you can physically touch in a computer system are called:
Options- A. software
- B. firmware
- C. hardware
- D. none of the above Discuss
Correct Answer: hardware
- 6. The devices that provide the means for a computer to communicate with the user or other computers are referred to as:
Options- A. CPU
- B. ALU
- C. I/O
- D. none of the above Discuss
Correct Answer: I/O
- 7. Which bus is a bidirectional bus?
Options- A. address bus
- B. data bus
- C. address bus and data bus
- D. none of the above Discuss
Correct Answer: data bus
- 8. A register in the microprocessor that keeps track of the answer or results of any arithmetic or logic operation is the:
Options- A. stack pointer
- B. program counter
- C. instruction pointer
- D. accumulator Discuss
Correct Answer: accumulator
- 9. When was the first 8-bit microprocessor introduced?
Options- A. 1969
- B. 1974
- C. 1979
- D. 1985 Discuss
Correct Answer: 1974
- 10. The technique of assigning a memory address to each I/O device in the computer system is called:
Options- A. memory-mapped I/O
- B. ported I/O
- C. dedicated I/O
- D. wired I/O Discuss
Correct Answer: memory-mapped I/O
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