SRM University 2007 B.Tech Electronics and Communications Engineering BANK : Microprocessor and Interfacing - Question Paper

S.R.M. INSTITUTE OF SCIENCE & TECHNOLOGY
SCHOOL OF ELECTRONICS & COMMUNICATION ENGINEERING
ques. BANK
Subject Code : EC307
Subject Name : Microprocessor and Interfacing
Year & Sem : III Year , V Sem (ECE)

UNIT – I
PART - A
1. List the components of a computer. discuss the function of every component.
2. What is a Microprocessor? What is the difference ranging from a microprocessor and a CPU?
3. What is the basic difference ranging from microprocessor and microcomputer?
4. What is meant by an eight bit µP and a 16 bit µP?
5. Define bit, byte, word and instruction.
6. What are low level and high level languages?
7. What is a bus? How is it classified?
8. What is address?
9. Why address bus is unidirectional and data bus is bidirectional?
10. State the relationship ranging from the number of address lines and physical memory space?
11. List the 4 operations commonly performed by µP unit.
12. Specify the 4 control signals commonly used by 8085 µP?
13. What is tristate logic? Why is it needed in µP system?
14. What is flag?
15. What is the function of accumulator?
16. List the components of a µP based system.
17. Why interfacing is needed for I/O devices?
18. What is the difference ranging from CPU bus and system bus?
19. What is multiplexing and what is its advantage?
20. How address and data lines are demultiplexed in 8085?
21. List a few of the applications of microcomputer system.
22. What are the advantages and disadvantages of µP based system?
23. What is the fabrication technology used for 8085?
24. What is the physical memory space in 8085?
25. What is ALE?
26. What is the function of IO/M* signal?
27. Where is READY signal used?
28. What is HOLD and HLDA and how is it used?
29. What is the use of status lines S1 and S0 in 8085?
30. What is the use of CLKOUT and RESETOUT signals in 8085?
31. What happens to 8085 µP when it is resetted?
32. What are the operations performed by ALU of 8085?
33. Write the organization of registers in 8085 µP?
34. Show the bit positions of different flags in 8085 flag register.
35. Discuss the evolution of microprocessor.
36. How the µP is synchronized with peripherals?
37. What are the hardware interrupts of 8085? How are they prioritized?
38. What are the maskable and unmaskable interrupts of 8085?
39. What are vectored and non vectored interrupts of 8085?
40. Define stack. What is the kind of stack in 8085?
41. What is program counter? How is it useful in program execution?
42. What is stack pointer?
43. How µP is synchronized with peripherals?
44. What is minimum system and how is it formed in 8085?
45. What is machine cycle and instruction cycle?
46. What is fetch and execute cycle?
47. List the different machine cycles of 8085.
48. What is the need timing diagram?
49. What is T-state?
50. How many machine cycles constitute 1 instruction cycle in 8085?

Earning:   Approval pending.