AD University Of Sargodha (UOS) 2025

Univers;

S

2 ly of Sargodha

2nd em

Subject: IT/CS “Ser F. 4) Examination 2025

Time All Paper; igita] | ogic Design (ITSC-1 2/CMP-2210

ERE 0230 Hours Maximum Marks: 60 A

Note: Objective part is compulsory, Attempt apy three questions from subjective part.

Objective Part (Compre)

(2*12)

fed ny answer sheet

Q.1. W nte short answers of the following in 2-3 ines each ony i 27 into BCD.

17+ Define BCD code. Give an example of converting .

IL. Implement an OR gate using only NAND BCS

Hi." Simplify the Boolean function F=AR+A'B*AD ial circuit.

es - : equential ©

Iv. Explain the difference between a combinational pita Spe

v: How multiplexer is different from demultiplexer

vi, Define setup time and hold time in flip-flops

vil. Draw a 3-bit binary up counter. 4

viii. Differentiate between EPROM and EEPROM. . Ni

: ces pl Xpressions:

ix. What is the role of Karnaugh Maps in simplifying Boolean exp

X. What is FPGA? Mention one application.

xi. What is a modulus of a counter? Give an example. a

: : n.

xii. What is the function of a decoder? Give one practical applicatio

& “a

|

Subjective Part (3*12)

2.

Maximum Marks: 60

Objective Partis compulsory, 5 :

+ Attempy any three questions from subjective part.

Objective Par (Compulsory)

Write sh

1. :

i: Do ae hi following in 2.3 Jines each on your answer sheet (2*12)

ii aid > : D code. Give an example of converting decimal 27 into BCD.

Hie ement an OR gate using only NAND gates.

des FPL the Boolean function F=Ap+A'B+AB’.

vi Hoo ihe difference between a gombinational circuit and a sequential circuit.

Vie. Den mu tiplexer is different from demultiplexer?

1 B ine Setup time and hold time jj flip-flops. _

viii’ Draw a 3-bit binary up counter

3)

: gL reatiaie between EPROM and EEPROM

X. What + i or OL nang Maps in simplifying Boolean expressions?

: ; 5 10n one application.

J hat isa modulus ofa CONE an example.

. at is the function of a decoder? Give one practical application.

— _— A «i £* on A oh

Subjective Part (3*12) TR :

Explai > sesOf convert: :

Rn process of converting a decimal number into binary, octal, and hexadecimal with a suitable

Use a Karnaugh Map to minimize the Boole

an function:

(a) F(A,B,C,D)=2(1,3,4,5,7.9,11,15) Hi

(b) F(W,X,Y,Z2)=%(0,2,5,7,8,10,13,15).

Prove that NAND and NOR gates are universal gates. Show implementation of AND, OR, and NOT

gates using NAND only.

Design a 3-bit asynchronous binary counter using T flip-flops. Draw the logic diagram and timing

waveforms.

Differentiate between serial-in/parallel-out and parallel-in/serial-out shift registers. Draw block

diagrams for both.

LK-7060/19-11-25 -seseeseareecarmmresees