M.Voc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Software Development
DIGITAL ELECTRONICS AND COMPUTER SYSTEM
ARCHITECTURE
(CBCS 2017 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all the questions.
1. What is Binary number system?
2. Define Gray code.
3. Define Boolean Law.
4. What is Multiplexer?
5. What is register?
6. Define asynchronous counter.
7. What are the uses of stack?
8. Specify the function of the bus.
9. What are the steps to execute an instruction?
10. Define input/output interrupt.
Sub. Code
7MSD1G1
RW-993
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Wk ser
Part B x 5 25)
Answer all questions choosing either or
11. Write short notes on ASCII Code and Excess
3 Code.
Or
Construct truth table for AND, OR and NOT gates.
12. State the Demorgan's theorems. Give examples.
Or
Explain the concept of simplifications of sum of
product and product of sum of Boolean expressions
with your own example.
13. Explain in detail about JK Flip-Flop.
Or
Differentiate between synchronous and asynchronous
counters.
14. Write short notes on Processor Bus Organization.
Or
Discuss about Data transfer and manipulation.
15. Explain in detail about Instruction codes.
Or
Describe the mechanism of Timing control in
Register Transfer and Language.
RW-993
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Wk ser
Part C x 10 30)
Answer any three questions.
16. Discuss about Number systems.
17. Explain in detail about the function of Multiplexers and
De multiplexers.
18. Discuss in detail about Master/Slave Flip-flops.
19. Explain in detail about Addressing Modes.
20. Give a brief notes on Arithmetic and Logical shift micro
operations.
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