Tribhuvan University
Bachelor of Computer Application
Semester 2 · TU Board 2020
Course Title: Microprocessor and Computer Architecture (CACS155)
Full Marks: 60Pass Marks: 24Time: 3 hours
Candidates are required to answer the question in their own words as far as possible.
Group B
Attempt any SIX question.(6 × 5 = 30)
- 2.5
Define CPU. Differentiate between Microprocessor and Microcontroller with example.
- 3.5
Define instruction cycle. Explain the opcode fetch machine cycle for MOV A, B with timing diagram. (Opcode: MOV A, B = 78h)
Answer comingAlso asked in 2019
- 4.5
Write an ALP using 8085 to check number stored in memory location 8080h is either even or odd.
- 5.5
What is cache memory? Explain the elements of cache design.
- 6.5
Explain the organization of Microprogrammed Control Unit.
Answer comingAlso asked in 2019
- 7.5
What is pipeline? Explain the four segment instruction pipeline.
Answer comingAlso asked in 2023, 2019
- 8.5
Write short notes on (any two): a) Accumulator b) 8085 Interrupts c) Structure of Hard Disk
Group C
Attempt any TWO questions(2 × 10 = 20)
- 9.10
Define instruction set. Classify the instructions available in 8085 with example.
- 10.10
Define the addressing mode. Explain the various instruction addressing modes with example.
Answer comingAlso asked in 2026, 2022, 2021, 2019
- 11.10
Define micro-program? Describe symbolic micro-program for instruction FETCH routine. Explain the organization of micro-program sequencer for control memory with suitable diagram.
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