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D 90138 (Pages : 2) ‏سس هت م29‎ १०८०० किक

FIFTH SEMESTER B.A./B.Sc. DEGREE EXAMINATION, NOVEMBER 2020
(CUCBCSS—UG)
Computer Science
BCS 5B 07—COMPUTER ORGANIZATION AND ARCHITECTURE 5
4 (2017 Admissions)
Time : Three Hours Maximum : 80 Marks
Section A

Answer all questions.
Each question carries 1 mark.

1. Give the logic diagram of OR gate using NAND gate.
2. List the universal gates ?
3. Which type of flip-flops are used for implementing Johnson's counter ?
4. What does the ring counter do ?
5. What is an accumulator ?
6. What is address sequencing ?
7. What is micro program ?
8. What is an interrupt ?
9. What is virtual memory ?
10. What are I/O controllers ?
(10 x 1 = 10 marks)
Section B

Answer at least four questions. ச
Each question carries 4 marks.
All questions can be attended.

Overall ceiling 16.

11. Give the logic diagram and truth table of XOR gate.

12. What is a latch ? How it differs from flip-flop ?
Turn over