November 25, 2011

COMPUTER ORGANIZATION JNTU previous years question papers

COMPUTER ORGANIZATION JNTU previous years question papers

1. (a) Find out what are the actual values of the following IEEE 754 single precision
i. Sign=0, exponent=all 1s and fraction field is not 0.
ii. Sign=0, exponent=all 0s and fraction field is 0.
iii. Sign=1, exponent=all 1s and fraction field is 0.
iv. Sign=0, exponent=1000 0001, fraction=1100 0000 0000 0000 0000 000
(b) Why is bus arbitration required. Discuss about any two bus arbitration methods. [10]

2. . Design a circuit to implement the following RTL instructions. Mention about control logic. Assume A,B are 4-bit registers using JK flip-flops. [16]
A A + B
B A + B

3. (a) Why do we need some bits of current microinstruction to generate address of the next microinstruction? Support with a live example. [8]
(b) Support or oppose the statement “the control unit is a firmware”. [8]

4. (a) What is the use of fast multiplication circuits? Write about array multipliers.[8]
(b) Multiply 10111 with 10011 using booths algorithm. [8]

5. Explain the following:
(a) Asynchronous DRAMS
(b) Synchronous DRAM. [8+8]

6. Explain the following:
(a) Isolated Vs Memory mapped I/O
(b) I/O Bus Vs Memory Bus
(c) I/O Interface
(d) Peripheral Devices. [4+4+4+4]

7. (a) What is Flynn’s classification? Categorize.(b) Explain each stream of the Flynn’s classification with an example. [10]

8. (a) Explain the working of a five dimensional hpercube network with a neat sketch.
(b) Draw a diagram showing the structure of four-dimensional Hypercube network. List all the parts available from node 7 to node 9 that use a minimum number of intermediate nodes.



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