Digital logic Design BS 2 Semester/Term University Of Sargodha (UOS) 2020

29394

University of Sargodha

BS 2nd Semester/Term Examination 2020

Subject: 1.1

Paper: Digital Logic Design (ITCS-102)

Time Allowed: 2:30 Hours

(New Course)

Maximum Marks: 80

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.

Ustao i Express + 19 and - 19 in sign-magnitude, I's compiement, and 2's complement.

(2*16)

ii. Add the signed numbers: a 1000100, 00011011, 00001110, and 00010010.

ili. Perform each of the following subtractions of the signed numbers

2) 00001000 - 00000011b 00001100 - 11110111

iv.

Convert the following binary numbers to hexadecimal

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a) 100101001010111

b) 1111100001101001

V.

Vi.

How does an exclusive-OR gate differ from an OR gate in its logical operation?

Apply De Morgan's theorems to each of the following expressions

(A + B +

C)D

(b) AB + CD + EF

vii.

viii.

ix.

X.

xi.

Simplify the following Boolean expression: [ABC + BD) + AB]C

Convert the following Boolean expression into standard SOP form ABC + A B + ABCD

Develop a truth table for the standard SOP expression A BC + ABC + ABC

Map the following standard SOP expression on a Karnaugh map: A BC + ĂBC + ABC + ABC

Group the 1s in the following Karnaugh maps.

00

10

00

Xii.

xiii.

ustao

10

Define Don't Care Conditions

Identify the law of Boolean algebra upon which each of the following equalities is based

(a) AB + CD + AČD + B = B + AB + AČD + CD

(b) ABCD + ABC = DCBA + CBA

Write the Boolean expression for each of the logic circuits.

gri.co

(8)

(b)

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29394

University of Sargodha

BS 2nd Semester/Term Examination 2020

Subject: 1.1

Paper: Digital Logic Design (ITCS-102)

Time Allowed: 2:30 Hours

(New Course)

Maximum Marks: 80

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.

Ustao i Express + 19 and - 19 in sign-magnitude, I's compiement, and 2's complement.

(2*16)

ii. Add the signed numbers: a 1000100, 00011011, 00001110, and 00010010.

ili. Perform each of the following subtractions of the signed numbers

2) 00001000 - 00000011b 00001100 - 11110111

iv.

Convert the following binary numbers to hexadecimal

dni.com

a) 100101001010111

b) 1111100001101001

V.

Vi.

How does an exclusive-OR gate differ from an OR gate in its logical operation?

Apply De Morgan's theorems to each of the following expressions

(A + B +

C)D

(b) AB + CD + EF

vii.

viii.

ix.

X.

xi.

Simplify the following Boolean expression: [ABC + BD) + AB]C

Convert the following Boolean expression into standard SOP form ABC + A B + ABCD

Develop a truth table for the standard SOP expression A BC + ABC + ABC

Map the following standard SOP expression on a Karnaugh map: A BC + ĂBC + ABC + ABC

Group the 1s in the following Karnaugh maps.

00

10

00

Xii.

xiii.

ustao

10

Define Don't Care Conditions

Identify the law of Boolean algebra upon which each of the following equalities is based

(a) AB + CD + AČD + B = B + AB + AČD + CD

(b) ABCD + ABC = DCBA + CBA

Write the Boolean expression for each of the logic circuits.

gri.co

(8)

(b)

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XV.

Design a logic circuit to implement the operation specified in the following truth table.

INPUTS

OUTPUT

PRODUCETE

0

ABC

ABC

ABC

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XVi.

What is the functionality of the following Logic Diagram?

usto

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Q.2.

Q.3.

Q.4.

Q.5.

Q.6.

Subjective part

(3*16)

Draw Full Adder Logic diagram and its truth table.

Draw seven segment logic diagram and its truth table

What is decoder? Draw truth table for four bit decoder

Simplify the following Boolean functions, using Karnaugh maps

(a) F(x, y, z) = 2 (2, 3, 6,

7)

(b) F (4, B, C,

D) = 2 (4, 6, 7,

15)

Obtain the simplified Boolean expressions for output F and G in terms of the input variables in the

circuit given below.

1-

• G

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Time Allowed: 2:30 Hours

University of Sargodha

BS 20d Term/Semester Exam 2020

Subject: L T

Course: Business Economics (BUSB-102)

29413

Maximum Marks: 80

Objective Part

Q.1. Write short answers of the following in 2-3 lines each

Business Ethics

Business Economics

SME

Law of Demand vs Law of Supply

V..

Sunk Cost

Subsidy

Production

vill.

Monopoly

IX-

Social Cost

x. -- Industry

xi-

Cross elasticity of demand

Market

XI.-

XiV:

XV-

XVH-

Externalities

GDP vS GNP

Demand Forecastin

Household Consumptio

(Compulsory)

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(2*16)

Q.2-

Subjective Part

(3*16)

Define Monopoly? What äre the few disadvantages of it? Explain how price is determined in such

markets?

• State and Explain Law of supply?

What are different types of firms? Why Multinational Corporations are important for economic

growth? Explein their role in brief?

difference between domestic and international trade? How do you see the future of Pakistan

dedel Pak China Economic Corridor in internationahfrade?

Define Inflation? How inflation effects therfuying power of consumers?

What measures can

Government of Pakistan can take to cord die rising infation in the country?

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