Osmania University (OU) 2009-2nd Year M.C.A I Semester (Main) , - Question Paper
FACULTY OF INFORMATICS
M.C.A. I Year II Semester (Main) Examination, June 2009
COMPUTER ORGANIZATION
Time: three Hours] [Max. Marks : 80
ans 1 ques. from every unit.
All ques. carry equal marks.
Unit – I
1 (a) Draw the block diagram of dual 4-to-1 line multiplexers and discuss its operation
by means of function table.
(b) discuss fault detection with odd parity bit.
Or
2. (a) Construct a 5-to-32-line decodes with 4 3-to-8 line decoders with enable and 1
2-to-4 line decoders.
(b) Convert the subsequent decimal numbers to the bases indicated.
(i) 7562 to octal
(ii) 1938 to hexa decimal
(iii) 175 to binary
Unit – II
3. (a) Design a 4-bit combinational circuit decrementer using 4 full – adder circuits.
(b) The subsequent transfer statements specify a memory. discuss the memory operation
in every case.
(i) R2 ß M [AR]
(ii) M [AR] ß R3
(iii) R5 ß M [R5]
Or
4. (a) Derive the control gates associated with the program counter PC in the basic
Computer.
(b) What is the difference ranging from a direct and indirect instruction? How many
References to memory are needed for every kind of instruction to bring an operand
Into processor register?
Unit – III
5. (a) Write a program to multiply 2 positive numbers by a repeated addition method.
For example, to multiply 5*4 the program evaluates the product by adding five 4
times. (5+5+5+5)
(b) Write short note on Subroutine and Interrupts.
Or
6. (a) Distinguish ranging from hardwired control unit and micro programmed control unit.
(b) describe the following:
(i) Microoperation
(ii) Micro program.
Unit – IV
7. (a) Write a short notes on Instruction Formats.
(b). Convert the subsequent arithmetic expression into reverse polish notation and show
the stack operation for evaluating outcome. 3+4[10(2+6)+8]
Or
8. (a) Distinguish ranging from Risc and Cisc processors.
(b). discuss booths algorithm for multiplication and binary integers.
Unit – V
9. (a) What is difference ranging from isolated I/o and memory mapped I/o? elaborate the
advantages and disadvantages of each?
(b) What is Associate memory? Derive match logic?
Or
10. (a) discuss data transfer of DMA.
(b) Write short notes on virtual memory?
*******
FACULTY OF INFORMATICS
M.C.A. I Year II Semester (Main) Examination, June 2009
COMPUTER ORGANIZATION
Time: 3 Hours] [Max. Marks : 80
Answer one question from each unit.
All questions carry equal marks.
Unit I
1 (a) Draw the block diagram of dual 4-to-1 line multiplexers and explain its operation
by means of function table.
(b) Explain error detection with odd parity bit.
Or
2. (a) Construct a 5-to-32-line decodes with four 3-to-8 line decoders with enable and one
2-to-4 line decoders.
(b) Convert the following decimal numbers to the bases indicated.
(i) 7562 to octal
(ii) 1938 to hexa decimal
(iii) 175 to binary
Unit II
3. (a) Design a 4-bit combinational circuit decrementer using four full adder circuits.
(b) The following transfer statements specify a memory. Explain the memory operation
in each case.
(i) R2 M [AR]
(ii) M [AR] R3
(iii) R5 M [R5]
Or
4. (a) Derive the control gates associated with the program counter PC in the basic
Computer.
(b) What is the difference between a direct and indirect instruction? How many
References to memory are needed for each type of instruction to bring an operand
Into processor register?
Unit III
5. (a) Write a program to multiply two positive numbers by a repeated addition method.
For example, to multiply 5*4 the program evaluates the product by adding 5 four
times. (5+5+5+5)
(b) Write short note on Subroutine and Interrupts.
Or
6. (a) Distinguish between hardwired control unit and micro programmed control unit.
(b) Define the following:
(i) Microoperation
(ii) Micro program.
Unit IV
7. (a) Write a short notes on Instruction Formats.
(b). Convert the following arithmetic expression into reverse polish notation and show
the stack operation for evaluating result. 3+4[10(2+6)+8]
Or
8. (a) Distinguish between RISC and CISC processors.
(b). Explain booths algorithm for multiplication and binary integers.
Unit V
9. (a) What is difference between isolated I/o and memory mapped I/o? What are the
advantages and disadvantages of each?
(b) What is Associate memory? Derive match logic?
Or
10. (a) Explain data transfer of DMA.
(b) Write short notes on virtual memory?
*******
| Earning: Approval pending. |
