Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) (CSE-IT)- Computer Science Engineering -Information Technology 2020 December 3rd Sem 56593 Digital Circuits And Logic Design Previous Question Paper
Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech.(CSE)/(IT) (2012 to 2017) (Sem.?3)
DIGITAL CIRCUITS & LOGIC DESIGN
Subject Code : BTCS-303
M.Code : 56593
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 F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Write Briefly :
1.
Convert a D flip flop into T flip flop
2.
Design a 4:1 MUX
3.
Parity Checker
4.
MOSFET RAM
5.
Function of Multivibrator
6.
RTL versus DCTL
7.
Convert 110012 to decimal
8.
What is resolution in A/D Converter?
9.
Find the state diagram to design a sequence detector circuit, which detects three or more
consecutive 1's in a string of bits coming through an input line.
10. EEPROM
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SECTION-B
11. Design full subtractor using De-Multiplexer.
12. Using Boolean algebra show that :
AB + AC + BC = AB + AC
13. Explain the structure of typical RAM cell.
14. Draw and explain logic diagram of a mod-8 ripple counter using three JK flipflops.
15. What is difference in 1's and 2's Complement? Which of two is better to represent negative
numbers? Why?
SECTION-C
16. What are the different A/D and D/A conversion techniques? Explain in detail.
17. What do you understand by Boolean expressions and need of their minimization? Elaborate
SOP and POS.
18. a. Draw a truth table for 4-input `OR' Gate and 3-input `NAND' Gate
b. Define Interfacing and show the interfacing of two TTL gates. Also discuss their
characteristics.
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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This post was last modified on 13 February 2021