Digital logic Design BS 2 Semester/Term University Of Sargodha (UOS) 2024

yi: University of Sargodha

y BS 2" Term Examination 2024

Vy Subject: IT/CS Paper: Digital Logic & Design (ITSC-102/CMP-2210

4 p oe ob 2 (For Regular & Retake Students)

Tigs Allowed: 2:30 Hours | Maximum Marks: 60

Wor gi hy

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

Objective Part (Compulsory)

Q.1. Write short answers of the following in 2-3 lines each on your answer sheet. (2*12)

i. Difference between NAND and NOR gate.

ii. Convert 773 decimal to hexadecimal.

iii. Take 7's compliment of 746511 decimal number.

iv. Take 2’s compliment of 11001100 binary number.

v. What is asynchronous counter operation?

vi. What is use of adder and subtractor?

vii. What are the basic Logic gates?

viii. Discuss the use of flash memories.

ix. . What do you know about edge triggered flip-flops?

wv Diffarenfiate hetuarean NMinnltinlever and NDemniltinlever

y: University of Sargodha

BS 2" Term Examination 2024

Subjest IT/CS Paper: Digital Logic & Desi TSC-102/CMP-2210

$ co (For Regular & Retake Students)

wed Maximum Marks: 60

Ti Allowed: 2:30 Hours :

we

Q.1. Write short answers of the following in 2-3 lines each on your answer sheet.

iii. Take 7’s compliment of 746511 decimal number.

x. Differentiate between Multiplexer and Demultiplexer.

xi. What is use of encoder?

xii. How many types of number system are there?

(2*12)

Subjective Part (3*12)

Q.2. Simplify the following Boolean functions using four-variable maps:

a) F(A B,CD) = 5(1,4,5,6,12,13,15)

b) EW, X,Y,Z) = X(0,1,2+8!5,7,12,14)

Q.3. Convert the following hexadecimal numbers to the indicated bases:

a) FF.CC to decimal

b) ABC.CBA to octal

¢) FCC.BB to binary -

d) 97BB.6C to octal

Q.4.

a) Represent the decimal number 1704 in

(a) BCD

(b) excess-3 code

(c) 2421 code and

(d) as a

binary number.

». What is ASCII code? Discuss with the help of different examples from alphabets and numeric

values.

Q.5. Given the following function.

F = wxy + wxy + xyz + xyz + Wxy

a) Draw the logic diagram using the original Boolean expression,

b) Simplify the function to a minimum number of literals using Boolean algebra.

Q.6. Briefly discuss half adder, full adder, half subtractor, full subtracter, encoder, decoder

multiplexer and demultiplexer. : 4 i

LK-7060/19-11-24 -------

ustadni.com