Digital logic Design Msc IT 5/1 Semester/Term University Of Sargodha (UOS) 2020

University of Sargodha

M. 5c. 1" Semester/Term Exam 2020

Paper: Digital Logic & Design (CMP 2210)

Masimum Marla: 50

Time Allow

Note Objective part is empulsory: Afhctadhi.com

Q.1:

Objective Part

(Compulsory)

Write short answers of the following in 2-3 lines cach.

(2/16)

Draw the logic Diagram of XOR gate using all NAND gates?

Explain the term BCD code ?

Explain the term SOP and POS?

Subtract by using 2's compliment 110110 - 0101109

Draw logic circuit which performed subtraction between two values?

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Describe the basic concepts of demultiplexed

Represent decimal namber 1011 into BCD code?

Prove that exclusive -OR is the complement of exclusive -NOR?

Prove that x+1-12

Simplify to minimum number of literals (X+Y)X+Y)?

Define combinational logic?

Prove that B+B'C-B+C1

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Implement the logie circuit from given Boolean Expression. Do not use AND, OR and NOT

GATES.

X-A'B+AB:

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What are the synchronous sequential circuit and asynchronous sequential circuit?

Implement of a full-adder with two half-adders and an OR gate?

Convert 1010 Exceess-3_ into 2421 code ?

Subjective Part

Q.2:

Q.3:

Q.4:

Q.5:

0.6:

to the cube of the input value?

Design the combinational logic cigelPhia get 3 bit number as a input and deliver throtpur equals

8) Show how combination of AND gates can be used to produce AND yard diR gate and NOR

b) Implement the Boolean function

F= AB'CD'+A BCD'+AB'C D-A'BC'D

with exclusive -OR and AND gates.

Design a combinational circuit that converts a decimal digit from the 8,4,-2,-1 code to BCD ?

Draw the truth table and logic dingram to explain the basic operation of Edge trigged D flip-lop?

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