Computer Hardware and Software problems
- 1. It takes two memory locations (16 bits each) to store an address in the 8085 system.
Options- A. True
- B. False Discuss
Correct Answer: False
- 2. To keep the number of IC pins to a minimum, the 8085 uses a multiplexed bus.
Options- A. True
- B. False Discuss
Correct Answer: True
- 3. The control bus and memories share a bidirectional bus in a typical microprocessor system.
Options- A. True
- B. False Discuss
Correct Answer: False
- 4. The register in the 8085 microprocessor that is used to keep track of the memory address of the next opcode to be run in the program is the ________.
Options- A. stack pointer
- B. program counter
- C. instruction pointer
- D. accumulator Discuss
Correct Answer: program counter
- 5. 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
- 6. Since microprocessor CPUs do not understand mnemonics as they are, they have to be converted into __________.
Options- A. hexadecimal machine code
- B. high-level language
- C. assembly language
- D. hexadecimal machine code and assembly language Discuss
Correct Answer: hexadecimal machine code
- 7. The first part of a machine language instruction that specifies the operation to be performed is called a(n) __________.
Options- A. mnemonic
- B. opcode
- C. interrupt
- D. instruction cycle Discuss
Correct Answer: opcode
- 8. The __________ program is used to convert mnemonic code to machine code.
Options- A. debug
- B. C++
- C. fortran
- D. assembler Discuss
Correct Answer: assembler
- 9. The circuits in the 8085 that provide the arithmetic and logic functions are called the __________.
Options- A. CPU
- B. ALU
- C. I/O
- D. bus decoder Discuss
Correct Answer: ALU
- 10. A(n) ________________ is the time it takes a microprocessor to fetch and execute a complete instruction.
Options- A. instruction cycle
- B. machine cycle
- C. timing cycle
- D. write cycle Discuss
Correct Answer: instruction cycle
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