Jawaharlal Nehru Technological University, Hyderabad M.C.A-I Semester Supplementary Examinations July 2010 COMPUTER ORGANIZATION Question paper

Code No: 31002


Time: 3hours Max.Marks:60

Answer any Five questions

All questions carry equal Marks

1. a) How K-maps are used in simplifying Boolean expressions illustrate with an example.
b) Explain the complement of a function with an example and its logic diagram.

2. a) Explain the block diagram of full adder.
b) Explain about the JK flip flop.

3. a) Explain memory hierarchy in a computer system with neat diagram.
b) How many 128x8 RAM chips are needed to provide a memory capacity of 2048 bytes?

4. Explain the architecture of INTEL 8086µp.

5. a) Explain the logical operations of 8086 µp.
b) What are flags, explain the significance of flags in microprocessors.

6. a) Explain about the process control instructions.
b) Explain about assembler directives.

7. Explain in detail about:
i) Control memory. ii) Control address register
iii) Routine iv) Conditional branching.

8. a) Explain about I/O interface.
b) Compare and contrast between isolated I/O and memory mapped I/O.

Jawaharlal Nehru Technological University, Hyderabad M.C.A-I Semester Supplementary Examinations July 2010 COMPUTER ORGANIZATION Question paper

Time: 3hours Max.Marks:60

Answer any Five questions
All questions carry equal Marks

1.a) Discuss the various schemes for representing floating point numbers.
b) Simplify the following Boolean function in sum of products form by means of a four variable map. Draw the logic diagram with AND-OR gates. F(A, B, C, D) = S(0,2,8,9,10,11,14,15).

2. Explain the concept of cache memory with a neat diagram and the three types of memory mapping techniques used to implement cache memory.

3.a) Explain the various addressing modes of an instruction each with an example.
b) A computer has 32-bit instructions and 12-bit addresses. If there are 250 twoaddress
instructions, how many one-address instructions can be formulated.

4.a) Explain the Data transfer instructions.
b) What is Interrupt? Explain the different types of interrupts that cause a break in the normal execution of a program.

5. Draw the block diagram of a DMA transfer and explain the significance of each of the element.

6.a) Draw the flow chart for CPU program to input data.
b) Write an Assembly language program to find the factorial of a given number.

7.a) Draw and explain the memory connection to CPU.
b) Explain about the code segment registers.

8.a) Draw and explain the 4-bit bidirectional shift register with parallel load.
b) Explain about the Daisy-Chain Priority Interrupt.
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