This page contains Syllabus of Digital Logic of CSIT.

Title Digital Logic
Short Name DL
Course code CSC111
Nature of course Theory + Lab
Semester first-semester
Full marks 60 + 20 + 20
Pass marks 24 + 8 + 8
Credit Hrs 3
Elective/Compulsary Compulsary

Course Description

Course Description: This course covers the concepts of digital logic and switching networks. The course

includes the fundamental concepts of boolean algebra and its application for circuit analysis, multilevel

gates networks, flip-lops, counters logic devices and synchronous and asynchronous sequential logic and

digital integrated circuits.

Course Objectives: The main objective of this course is to introduce the basic tools for the design of

digital circuits and introducing methods and procedures suitable for a variety of digital design


Units and Unit Content

1. Binary Systems
teaching hours: 6 hrs

Digital Systems, Binary numbers, Number base conversion, Octal and hexadecimal numbers,

compliments, Signed Binary numbers, Decimal codes (BCD, 2 4 2 1,8 4 -2 -1,Excess 3, Gray

Code), Binary Storage and Registers, Binary logic

2. Boolean algebra and Logic Gates
teaching hours: 5 hrs

Basic and Axiomatic definitions of Boolean algebra, Basic Theorems and properties of Boolean

Algebra, Boolean Functions, Logic Operations, Logic Gates, Integrated Circuits

3. Simplification of Boolean Functions
teaching hours: 5 hrs

K-map, Two and Three variable maps, Four variable maps, product of sum simplification,

NAND and NOR implementation, Don't Care conditions, Determinant and selection of Prime


4. Combinational Logic
teaching hours: 5 hrs

Design Procedure, Adders, Subtractors, Code Conversions, Analysis Procedure, Multilevel

NAND and NOR Circuits, Exclusive-OR Circuits

5. Combinational Logic with MSI and LSI
teaching hours: 8 hrs

Binary Parallel Adder and Subtractor, Decimal Adder, Magnitude Comparator, Decoders and

Encoders, Multiplexers, Read-only-Memory (ROM), Programmable Logic Array (PLA),

Programmable Array Logic (PAL)

6. Synchronous and Asynchronous Sequential Logic
teaching hours: 10 hrs

Flip-Flops, Triggering of flip-flops, Analysis of clocked sequential circuits, Design with state

equations and state reduction table, Introduction to Asynchronous circuits, Circuits with latches.

7. Registers and Counters
teaching hours: 6 hrs

Registers, Shift registers, Ripple Counters, Synchronous Counters, Timing Sequences, The


Lab and Practical works

Laboratory works:

Introduction to logic gates with IC pin details and verify the truth table using bread board.

1. Use any one simulator to simulate the basic logic circuits functions.

2. Design of half adder, full adder, subtractor using basic logic gates.

3. Study and verification of 3-8 decoder using IC.

4. Study and verification of 8-3 encoder using IC

5. Implementation of 4-1 Mux using IC

6. Implementation of 1-4 DeMux using IC

7. Implementation of 7 Segment Display

8. Verification of Flip flop

9. Design and verification of Up counter/Down counter

10. Design and verification of Shift Register