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Posted By: Sree.... Member Level: Diamond Posted Date: 13 Jun 2008
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2006 Andhra Pradesh State Jawaharlal Nehru Technological University B.Tech PC BASED INSTRUMENTATION Set No. 3 Question paper
Code No: RR411002 Set No. 3
IV B.Tech I Semester Supplementary Examinations, March 2006
PC BASED INSTRUMENTATION
( Common to Electronics & Instrumentation Engineering and
Instrumentation & Control Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. Discuss with a diagram the components of a PC motherboard? [16]
2. List the various hardware circuits in the mother board which need the address from
CPU. Draw the block diagram of Address Bus and explain the use of each signal
in the diagram. [16]
3. Write about the following in detail in the Data Bus Distribution with a diagram:
(a) MD Bus.
(b) XD Bus. [8+8]
4. Explain bus utility signals with illustrations indicating the protocols. [16]
5. Discuss in detail the operations performed by 8288 bus controller with a neat timing
diagram. [16]
6. Describe in detail the modes of 8255 and the control signals involved with necessary
diagram. [16]
7. With reference to ADC/DAC/Digital I/o card, discuss the following:
(a) Multiplexer configuration
(b) Programming the on card timer.
(c) Mode of operation of the ADC. [6+5+5]
8. Write a program in C to demonstrate the operation of both D/A and A/D con-
verters. [16]
? ? ? ? ?
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