Microprocessor & Microcontroller Model Questions

CYCLE TEST – III

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

Sub Code : CS2252 Year : II

Subject Name : Microprocessor & Microcontroller Semester : IV

Total Marks : 60 Duration : 2 hrs

PART-A

Answer all the questions 10x2=20 Marks

1. What is coprocessor?
2. Name the three bus allocation schemes used in loosely coupled multiprocessor configuration
3. What are the functional parts of control unit in 8087
4. How many I/O channel are available in8089
5. What is DMA data transfer
6. What is key de bouncing
7. Draw the command word format for 8251
8. What are the modes of operation in 8253?
9. What is the difference between simplex and Duplex?
10. Draw the command word format for 8255.

PART - B

Answer any Four Questions 4 x10 =40 Marks

11. Explain in detail with neat diagram about the keyboard and display controller (10)

12. Describe the architecture of 8253 (10)

13. Explain the programmable interrupt controller 8259 with neat diagram (10)

14. Explain in detail about the multiprocessor configuration (10)

15. Explain the architecture of 8089 with neat diagram (10)