Andhra University
MCA - 1102 (2354/I/01)

MCA Degree Examination
First Year - First Semester

COMPUTER ORGANIZATION

(Effective from the admitted batch of 2000-2001)

Time: Three hours
Maximum: 75 marks

Answer Question 1 and any four questions.
Answer each question at one place.
All questions carry equal marks.

1.
a. Draw the block diagram of clocked synchronous sequential circuit and draw its state diagram.

b. what is the difference between hardwired control and micro-programmed control?

c. What is meant by RPN?

d. Write any six characteristics of RISC

e. What is the difference between Bus Grant and Bus request? (5 x 3 = 15)

2.
(a) Simplify the following expressions using Boolean algebra (8)
i. A + AB
ii. AB + AB'
iii. AB + A(CD+CD')

(b) Simplify the following expression in SOP and POS x'z' + y'z' + yz'+ xy (7)

3.
a. Explain about fixed point representation with examples. (7)
b. Explain about various Registers with their functions. (8)

4.
a. Explain the operation of control unit of basic computer with timing diagram. (7)
b. Explain about various memory reference instructions. (8)

5.
a. Explain about Micro programmed Control Organization. (7)
b. What are the various address sequencing capabilities required in control memory and draw the relevant diagram for selection of address for control memory (8)

6.
a. Explain in detail about stack organization. (7)
b. Explain about various addressing modes. (8)

7.
a. Explain in detail about Asynchronous Data Transfer. (8)
b. Explain about Daisy-Chain priority interrupt. (7)

8.
a. Explain about Associate Memory (7)
b. Explain about Associate Mapping. (8)