Anna University Chennai 2010-5th Sem B.E Electronics & Communication Engineering ./B.Tech , EMR/EMR , ester, Electronics and Communication Engineering, EC2304-MICROPROCESSOR AND MICROCONTROLLERS,
B.E./B.Tech. DEGREE EXAMINATION,
NOVEMBER/DECEMBER 2010,
FIFTH Semester,
Electronics and Communication Engineering,
EC2304-MICROPROCESSOR AND MICROCONTROLLERS,
REGULATION 2008
Reg. No.
B.E./B.Tech. DEGREE EXAMINATION. NOVEMBER/DECEMBER 2010 Fifth Semester Electronics and Communication Engiiseri EC 2304 MICROPROCESSORS AND MICROuCotRoLleKS (Regulation 2008)
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Maximum: 100 Marks |
Time : Three hours
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Answer ALL questions |
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PART A (10/2 = 20 Mar What are Tri-state devices?
Mention the advantage* of using theTtorectteiflory Access. What is the purpose of the (a) AAD <b) RCL
age
rafi to multiply two 16 bit unsigned that the two numbers are stored in
Write an 8086 asse numbers to provide CXandDX.
Give the salient feature# of
What is a Sample and Hold
What are the advantages of microcontroller?
'ogrammabte Interval Timer, register indirect addressing mode in 8051
Write an 8051 program to monitor PI continuously for the value 63H. It should get otMuifiomtoring only if PI = 63H.
9. Hojlf is the microhpntroller used for the traffic light control application?
10. Dilferemiatticroaroccssor from microcontroller in system design.
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PART B (5 x 16 = 80 Marks)
<8>
xplain the 8085 bus structure with a neat sketch.
t are the peripheral I/O instructions? Write its syntax and explain the same with the timing diagram. (8)
Or
xplain che 8086 interrupt types in detail.
(16)
12. (a) Explain the 8086 Bit Manipulation instructions with an ex each.
Or
(b) (i) Write an 8086 program to convert BCD Data to Bi
(ii) Explain the Relative addressing mode and the mode with its syntax. Use an example.
Id. (a) Explain the 8279 keyboard and display control!
Or
(b) Describe the architecture and working of 8253 timer.
14. (a) (i) Assume that 5 BCD data items are stored in ftMH locations starting at 40H as shown below. Write an 8051 program to find the sum of all the numbers. The result must be in BCD.
40= (71)
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(b) (i) Explain sketch. (ii) Explain the rota |  |
(8) 1 with an example for each. (8) |
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15. (a) Explain how microcontrollers and microprocessors can be used for the washing machine control application. Use sketches. | ||
41=(M)
42 = (65)
43 =<59)
44 = (37).
(ii) Explain the log
'$1 microcontroller. Give a neat
<8)
p instructions with an example for each.
(8)
neat sketch how microcontrollers and microprocessors can stepper motor control application.
Or
2 53125
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Attachment: |
| Earning: Approval pending. |
