Computer Hardware and Software problems
- 1. How many bits are used in the data bus?
Options- A. 7
- B. 8
- C. 9
- D. 16 Discuss
Correct Answer: 8
- 2. How many bits are used in the address bus?
Options- A. 7
- B. 8
- C. 9
- D. 16 Discuss
Correct Answer: 16
- 3. A microprocessor unit, a memory unit, and an input/output unit form a:
Options- A. CPU
- B. compiler
- C. microcomputer
- D. ALU Discuss
Correct Answer: microcomputer
- 4. A port can be:
Options- A. strictly for input
- B. strictly for output
- C. bidirectional
- D. all the above Discuss
Correct Answer: bidirectional
- 5. Which of the following is not a basic element within the microprocessor?
Options- A. microcontroller
- B. arithmetic-logic unit (ALU)
- C. temporary register
- D. accumulator Discuss
Correct Answer: microcontroller
- 6. Which of the following is not a computer bus?
Options- A. data bus
- B. timer bus
- C. control bus
- D. address bus Discuss
Correct Answer: timer bus
- 7. Exceptions to the 8085 microprocessor normal operation are called:
Options- A. jump instructions
- B. decoding
- C. interrupts
- D. jump instructions or interrupts Discuss
Correct Answer: jump instructions or interrupts
- 8. What is the difference between mnemonic codes and machine codes?
Options- A. There is no difference.
- B. Machine codes are in binary, mnemonic codes are in shorthand English.
- C. Machine codes are in shorthand English, mnemonic codes are in binary.
- D. Machine codes are in shorthand English, mnemonic codes are a high-level language. Discuss
Correct Answer: Machine codes are in binary, mnemonic codes are in shorthand English.
- 9. The technique of assigning a memory address to each I/O device in the SAM system is called:
Options- A. wired I/O
- B. I/O mapping
- C. dedicated I/O
- D. memory-mapped I/O Discuss
Correct Answer: memory-mapped I/O
- 10. How many buses are connected as part of the 8085 microprocessor?
Options- A. 2
- B. 3
- C. 5
- D. 8 Discuss
Correct Answer: 3
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