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Digital Electronics
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Microprocessor Fundamentals
Comments
Question
The register in the 8085A that is used to keep track of the memory address of the next op-code to be run in the program is the:
Options
A. stack pointer
B. program counter
C. instruction pointer
D. accumulator
Correct Answer
program counter
Microprocessor Fundamentals problems
Search Results
1. The circuits in the 8085A that provide the arithmetic and logic functions are called the:
Options
A. CPU
B. ALU
C. I/O
D. none of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: ALU
2. 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
3. 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
4. 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
5. 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
6. Single-bit indicators that may be set or cleared to show the results of logical or arithmetic operations are the:
Options
A. flags
B. registers
C. monitors
D. decisions
Show Answer
Scratch Pad
Discuss
Correct Answer: flags
7. Which of the following are the three basic sections of a microprocessor unit?
Options
A. operand, register, and arithmetic/logic unit (ALU)
B. control and timing, register, and arithmetic/logic unit (ALU)
C. control and timing, register, and memory
D. arithmetic/logic unit (ALU), memory, and input/output
Show Answer
Scratch Pad
Discuss
Correct Answer: control and timing, register, and arithmetic/logic unit (ALU)
8. The software used to drive microprocessor-based systems is called:
Options
A. assembly language
B. firmware
C. machine language code
D. BASIC interpreter instructions
Show Answer
Scratch Pad
Discuss
Correct Answer: assembly language
9. What kind of computer program is used to convert mnemonic code to machine code?
Options
A. debug
B. assembler
C. C++
D. Fortran
Show Answer
Scratch Pad
Discuss
Correct Answer: assembler
10. When referring to instruction words, a mnemonic is:
Options
A. a short abbreviation for the operand address
B. a short abbreviation for the operation to be performed
C. a short abbreviation for the data word stored at the operand address
D. shorthand for machine language
Show Answer
Scratch Pad
Discuss
Correct Answer: a short abbreviation for the operation to be performed
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