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| Digital logic and computer design exam paper | My CS Tutorial |
Paper Code: 13505
1505
B.Sc. (Computer Science) (Part 1)
Examination, 2018
Paper No. 2.2
DIGITAL LOGIC AND COMPUTER DESIGN
Time: Three Hours][Maximum Marks: 33
Note: Attempt five questions in all. Select one question from each Section.
3
_______________________________________
Section-A
1. (a) Write down the laws of “Boolean Algebra”.4
(b) Draw k-map for the following expression:
3
2. (a) State the laws of DeMorgan’s.4
(b) What are the Universal Logic Gates. Explain their importance.3
Section-B
3. (a) Design a half-adder.4
(b) How to implement a 4 x 1 Multiplexer ? Discuss.3
4. (a) Convert the following as specified :
(i) 
(ii) 
(iii) 
(iv) 
4
4
(b) Write in brief anout the following :
(i) Decoder
(ii) Binary Parallel Adder3
Section-C
5. (a) Differentiate cobinational logic circuits and sequential logic circuits.3
(b) Explain the different types of flip-flops.4
6. (a) What are “Triggers” ?3
(b) How to design a counter ? Explain in detail.4
Section-D
7. (a) How encoder is different from decoder ?4
(b) Explain the following terms :
(i) Registers
(ii) Ripple counters3
8. (a) Define the “over flow-condition” in aritmetic operations.3
(b) Give notation to represent any floating point number. What is ALU ? Explain its role.4
Section-E
9. (a) How inter register transfer operation performed ?
(b) What do you mean by the term “Clocked Sequential Circuits” ?
10. Write short notes on any two of the following :
(i) Subtractor
(ii) Don’t care conditions
(iii) Latch
(iv) Timing sequences each
each_______________________________________
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