AI 09 404-INTRODUCTION TO MICROPROCESSORS MAY 2012 (2009 Admissions)

SUBJECT - INTRODUCTION TO MICROPROCESSORS

CODE -  09 404

SEMESTER - FOURTH

BRANCH - AI

UNIVERSITY - CALICUT

YEAR - 2012

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Part A

Answer all Questions

1.What are low level language and high level language?

2.Write a program to turn on the air conditioner if switch SQ of the input port O/H is on. Ignore all other switches of the input port even if someone attempts to turn on other applications.

3.If CS = 123A and IP = 341B, determine the physical address of the next instruction.

4.What is Interrupt on terminal count ?

5.Write the control word to program 8255 in model with port B as input port.

(5x2=10 marks)

Part B

Answer any four questions,

6.Explain the function of the signals RESETOUT, HOLD, READY and TRAP.

7.Write a program to count the numbers of l’s in the given data.

8.Differentiate between the minimum and maximum mode of 8086.

9.With an example, how I/O devices and memory devices are interfaced with 8085.

10.Write a program to convert a Binary number to ASCII.

11.Explain about ICW and OCW of 8259.

Part C

Answer all questions

12.(a) Discuss the characteristics of Large, Medium and Microcomputers.

(b) Explain about Instruction format and flag register of 8085.

Or

13.Describe the block diagram of 8085.

14.Write a program to arrange 10 numbers in ascending order.

Or

15.Write a program to convert a BCD number to seven-segment display.

16.(a) Write an ALP to find the average of N numbers.

(b) Draw and explain the timing diagram of a memory read cycle.

Or

17.Explain the architecture of 8086.

18.Discuss in detail about 8257 DMA controller.

Or

19.Describe the features and operation of 8279. 

(4x10=40 marks)

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