Other question papers
2065 2066 2067 2068 2069 2070 2071 2072 2074 2075 2076

Tribhuwan University
Institute of Science and Technology
2074

Bachelor Level / second-semester / Science
Computer Science and Information Technology(CSC162)
(Microprocessor)
Candidates are required to give their answers in their own words as far as practicable.
The figures in the margin indicate full marks.
Full Marks: 60
Pass Marks: 24
Time: 3 hours

Section A

Attempt any two questions:(10 x 2 = 20)

1. Draw the block diagram of 8086 microprocessor and explain each block.  

10 Marks

View

2. Ten number of 8-bit data stored at memory location 6000H. Write a program for 8085 microprocessor to calculate the sum of odd numbers and store the sum of odd numbers and store the sum at 6010H.(The sum may exceed 8-biys).

10 Marks

View

3. What are the instructions available in 8085 microprocessor for arithmetic and logic operation? Explain each with example. Also mention, how the flags are affected by each instruction.

10 Marks

View

Section B

Attempt any EIGHT questions(8 x 5 = 40)

4. What are the basic features of SAP-1 computer? Explain.

5 Marks

View

5. Draw the timing diagram of instruction MVI B, 9 bit stored a memory location 4050H and explain it.

5 Marks

View

6. Observe the following program and write the content of Accumulator, register B and flags after execution of each instruction.(assume initially all flags are reset)

    MVI A, 59H

    MVI B, 67H

    ADD B

    ANI 3AH

    HLT

5 Marks

View

7. What is CALL operation? How it differs with JUMP operation? Explain.

5 Marks

View

8. Explain the function of following signals:

    ALE, READY, RD, and IO/M

5 Marks

View

9. Write an assembly language program for 8086 microprocessor to display"Computer Science and Information Technology" .

5 Marks

View

10. What are the registers available in 8086 microprocessor? Mention the function the function of each register.

5 Marks

View

11. What is the importance of interrupt in microprocessor based system? Explain how interrupt controller(8259) can be used to handle interrupts.

5 Marks

View

12. What are the differences between parallel and serial communication? Explain RS 232 interface.

5 Marks

View

13. Explain briefly on keyboard and display controller.

5 Marks

View