DISTANCE EDUCATION
B.Sc. DEGREE EXAMINATION, MAY 2016.
DIGITAL COMPUTER FUNDAMENTALS
(2007 onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
All questions carry equal marks.
20 100)
1. Write short notes on Error Detection Codes with
diagram.
Convert the following from one base to another base
indicated
16 to decimal
10 to Hexadecimal
8 to binary
1111001 2 to octal.
2. Perform the complement arithmetic operations
and verify the answers:
(The listed binary numbers have a sign in the left
most position and, it are in complement
form).
111010 100010
101010 111100
110011 111001
001100 110011.
Sub. Code
13
DE-3406
2
hp-ap1
Simplify the following expressions using Boolean
Algebra.
AB

3. Simplify the following functions using three and four
variable karnaugh map and draw the NOR logic circuit
for and




.
4. Explain about 1 to 16 demultiplexer with logic
circuit and truth table.
Explain the construction of ALU.
5. Explain addition and subtraction in parallel
arithmetic element with an example.
Explain Master Slave Flip flops.
6. What is binary counter? Explain.
What is shift register Explain.
7. Explain about ASCII and excess 3 code.
Explain the integer representation.
8. Write short notes on
Flip flops.
Primary storages.
Classification of computers.
Memory.