March 8, 2022
EAST WEST UNIVERSITY
Department of Computer Science and Engineering
B.Sc. in Computer Science and Engineering Program
Mid Term I Examination, Spring 2022
Course:
CSE 345, Digital Logic Design, Section-1
Instructor:
Full Marks:
Time:
Dr. Md. Sawkat Ali, Assistant Professor, CSE Department
20
1 Hour and 20 Minutes
Note: There are FIVE questions, answer ALL of them.
1. Complete the truth table for the function of 𝐹(𝑥, 𝑦, 𝑤, 𝑧) = 𝑦(𝑤𝑧 + 𝑤𝑧) + 𝑥𝑦𝑧.
[CO1,
Marks:3]
2. Show the following function in a standard sum of product form.
𝐹(𝑊, 𝑋, 𝑌, 𝑍) = 𝑌 𝑍𝑊 + 𝑊𝑋𝑌 + 𝑊𝑋𝑍 + 𝑊 𝑋 𝑍
[CO1, C3
Marks:5]
3. Design a three-bit code converter. In your design, you must cover the following
points:
[CO1, C3
Marks:5]
A.
B.
C.
D.
Input-output table
K-map
Logical functions
Logical diagram
4. Convert the following numbers:
(a) 1101011.0101 (decimal, hexadecimal)
[CO1, C2
Marks:4]
(b) 29072.3007 (binary, and octal)
5.
Find the minimum literal and draw the logic diagram corresponding to the given
Boolean expression.
𝐹(𝑃, 𝑄, 𝑅) = 𝑃𝑄𝑅 + 𝑃 𝑄 + 𝑃𝑄𝑅 + 𝑄𝑅
Page 1 of 1
[CO1, C2
Marks:3]