B.C.A 3rd semester examination
Computer organization exam question paper 2017 BCA
Q1. Perform the following conversion:
- (AF63)16 (…………..)2,(…………….)10
- (41.6875)10 (……….)2,(……………)16
- (F3A7C2)16 (…………)2,(…………..)8
- (736.4)8(……………….)10(……….)2
- (A) Explain 2’s complement notation to represent binary numbers.
(b) Write a short note on BCD arithmetic.
(C) Discuss hamming code for error detection.
Unit-II
- (a).What do you mean by bus and memory transfer?
(b).Explain the working of bus system with 4-register and 4-multiplexer using diagram.
- (a) what do you mean by micro operations.
(b) Give the working and diagram of 4-bit binary adder.
Unit-III
- (a) What is a register ? Explain the working and significant of a register in a basic computer.
(b) Explain timing and control with respect to a basic computer.
- (a) What do you mean by instruction cycle ?
(b) Define routine and mapping in address sequencing.
Unit –VI
- (a) Give the block diagram of CPU and also explain its working.
(b) Define control word.
- (A) Computer various addressing modes used in a computer system.
(b) Explain program status Word?
Unit-V
(Compulsory Question)
- Attempt all parts:
Fill in the blanks:
- A group of bits that tell the computer to perform a specific operation is known as ………..
- Hexadecimal number (2FOAC)16 is equivalent to decimal number (……)10 .
- A collection of lines that connected several devices is called a ……..
- A binary digit is called a……….
State whether the statement is true /false:
- Arithmetic operation with fixed point numbers take longer time for execution as compared to with floating point numbers.
- An arithmetic shift left multiplies a signed binary number by2.
multiple choice questions
………… register keeps tracks of the instructions stored in program store in memory.
- AR (Address register)
- XR (Index register)
- PC (program counter)
- AC (Accumulator)
the circuit converting binary data into decimal is :
- Encoder
- Multiplexer
- Decoder
- Code converter
The circuit used to store one bit of data is known as :
In computer subtraction is generally carried out by:
- 9’s complement
- 10;s complement
- 1’s complement
- 2’s complement
Answer the following in 25 to 50 words:
- List out different types of interrupts.
- Discuss various types of instruction formats
- Explain circular shift in brief.
- Explain two-Address instruction
- What do you mean by reverse polish notation?
- Give example to explain the concept.
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