Download PTU BCA 2020 Dec 3rd Sem 10059 Digital Circuits And Logic Design Question Paper

Download PTU BCA ( Bachelor of Computer Applications) 2020 December 3rd Sem 10059 Digital Circuits And Logic Design Previous Question Paper

Roll No.
Total No. of Pages : 02
Total No. of Questions : 16
BCA (2014 to 2018 Batch) (Sem.?3)
DIGITAL CIRCUITS AND LOGIC DESIGN
Subject Code : BSBC-303
M.Code : 10059
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains SIX q uestions ca rryin g TEN mark s each a nd stu dents hav e
to attempt any FOUR questions .
3 .
Use of n on-pro gra mmable scientific calculator is allowe d.
SECTION-A
Answer briefly :
1.
What is NAND gate?
2.
What is half adder?
3.
What is binary subtractor?
4.
What is multiplexer?
5.
Differentiate between RS and JK flip-flop.
6.
Explain Synchronous counter.
7.
What is race condition?
8.
Covert octal 736.4 to decimal.
9.
What is up-down counter?
10. What is 1's complement of 0001111?
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SECTION-B
11. Explain design of synchronous counters.
12. Explain different types of flip-flops.
13. Explain different types of logic gates.
14. Differentiate between :
a. encoder and decoder.
b. half adder and full adder
15. a. Explain MOD-N counters
b. Convert the hexadecimal number F3A7C2 to binary and octal.
16. a. Simplify the Boolean function F(A,B,C,D)= (3,7,11,13,14,15) in sum-of-products
form.
b. Explain the concept of binary adder.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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