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Digital Electronics
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Microprocessor Fundamentals
Comments
Question
Which bus is a bidirectional bus?
Options
A. address bus
B. data bus
C. address bus and data bus
D. none of the above
Correct Answer
data bus
Microprocessor Fundamentals problems
Search Results
1. 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
Show Answer
Scratch Pad
Discuss
Correct Answer: I/O
2. 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
Show Answer
Scratch Pad
Discuss
Correct Answer: hardware
3. 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
Show Answer
Scratch Pad
Discuss
Correct Answer: latch
4. 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
Show Answer
Scratch Pad
Discuss
Correct Answer: 8-bit port number
5. 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
Show Answer
Scratch Pad
Discuss
Correct Answer: address decoder
6. 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
Show Answer
Scratch Pad
Discuss
Correct Answer: accumulator
7. When was the first 8-bit microprocessor introduced?
Options
A. 1969
B. 1974
C. 1979
D. 1985
Show Answer
Scratch Pad
Discuss
Correct Answer: 1974
8. 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
Show Answer
Scratch Pad
Discuss
Correct Answer: memory-mapped I/O
9. All computer programs for a machine are called:
Options
A. software
B. firmware
C. hardware
D. none of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: software
10. What type of circuit is used at the interface point of an input port?
Options
A. decoder
B. latch
C. tristate buffer
D. none of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: tristate buffer
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