Sunday, 20 April 2014

Computer Organisation Very Important Questions

Computer Organisation Important Questions For Final Exams!

1).Represent decimal 187 in 3,3,2,1,4,4,3,-2 and 8,4,-2,-2 BCD and ASCII and EBCDI codes.

2).Represent decimal -135 in normalized floating point form to be stored in 32-bit register. 8 bits are reserved for exponent and 24 bits are reserved for mantissa including sign bit. Assume exponent uses offset notation and mantissa uses 2's complement representation.

3).Why 2's complement representation of integer is perferred over other representations?

4).If A = -9 and B = -13 then perform the following operations in signed 2's complement: (i) A - B and (ii) A X B.

5.)Convert the following Boolean expression to canonical forms:
F(A,B,C,D) = D(A'+ B) + B'D.

6).Design a Full Adder and Subtractor.

7).Design a BCD Adder.

8).Construct a 4 X 16 decoder with two 3 X * decoder / demultiplexers.

9).What is a JK Flip Flop? Write characteristics equation, characteristics table, and excitation table for JK Flip Flop. Convert JK Flip Flop into T-type Flip Flop and explain its working with characteristics table.

10).What is the difference between serial and parallel transfer? What type of register is used in each case? Comment on shift register as data format changer.

11).Design a 4-bit binary ripple counter. Explain its working with the help of timing diagram.

12).Draw the circuit diagram of SRAM binary cell and discuss read / write operations on it.

13).What are the elements of instruction format? What are the factors that affect the design of an instruction format?.

14).Distinguish between the scratch pad and accumulator based organization of processors with the help of block diagrams.

15).Distinguish between programmed I/O and Interrupt-initiated I/O.


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