Amrita Vishwa Vidyapeetham 2007 Post Graduate Diploma Computer Application PGDCA Principles Of Computer Organization PCA5101 - Question Paper

PGDCA Principles Of Computer Organization PCA5101
Time : 3 hours Maximum : 100 marks
ans any 5 ques..
every carries 20 marks.
(5 ? 20 = 100)
1. (a) What is the use of complements? discuss the 2 kinds of complements for every base-r systems.
(b) Explain how subtraction is performed using complement. discuss with an example.
2. (a) What is a multiplexer? discuss.
(b) Represent the decimal number 8620 in
(i) BCD
(ii) excess–3 code
(iii) 2, 4, 2, one code and
(iv) binary number.
3. Simplify the Boolean function.
and the don’t care condition.
.
4. Implement a full subtractor with two half-subtractor and an OR gate.
5. What is an RS flip-flop? discuss in detail its function with a neat sketch.
6. (a) What is a Magnetic Disk? How does it function?
(b) Explain Static and Dynamic RAM.
7. (a) Explain Instruction cycle and Execution cycle.
(b) Explain Programmed I/O.
8. (a) What is DMA? discuss in detail how does the transfer of date takes places.
(b) Explain any 2 output peripheral devices.

Earning:   Approval pending.