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Posted By: kondapalli Member Level: Gold Posted Date: 05 Jun 2008
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2007 Jawaharlal Nehru Technological University B.Tech Applied Electronics and Instrumentation PC BASED INSTRUMENTATION seno3 Question paper
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1. Draw the Block diagram of hardware subsystems of real - time control system and
describe the function of each module? [16]
2. List out Various essential features of operating system for PC based Instrumenta-
tion and give the description for each one in detail, with a diagram. [16]
3. What is a Address bus Logic ? List the various blocks of Address bus Logic and
explain the functions of each block in detail. [16]
4. (a) mention some PC expansion bus schemes.
(b) Explain the function of different signals in DMA operation and interrupt re-
quest operations in ISA bus.
(c) Explain the function of the following signals in ISA bus, indicating the nature
of the signal ( input / output ).
i. 0WS
ii. OSC
iii. IOCHRDY
iv. AEN [5+5+6]
5. Describe the signals involved and operations carried out to read and write I/O
ports. [16]
6. Sketch the general form of the bus interface for a smart peripheral IC 8255 PIO
and explain the salient features of it. [16]
7. (a) Explain the features of ADC/DAC/Digital I/o card.
(b) Discuss the power requirements, Base address selection and I/o map of the
card. [8+8]
8. Write a program in C to demonstrate the operation of both D/A and A/D con-
verters. [16]
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