1. Data Communication Muhammad Waseem Iqbal Assistant Professor
The University of Lahore
Ph.d Scholar
Office- G-10
Powerpoint Templates

2. Lecture # 01
Course Code:3323
Semester: Spring-2016

3. Acknowledgments These Lecture slides contain material from
Behrouz A. Forouzan, Data Communications and Networks, 4th Editionn
and
William Stallings, Data & Computer Communication, 8th edition

4. Goals Of This Course
Upon successful completion of the course the student will be able to:
Analyse the components of data communication (DC).
Identify and compare the functions and requirements of data communication.
Distinguish between the different functions in a data communication and demonstrate their uses.
Demonstrate how to set up a communications network for different business and social entities.
Discern the differences between the different types of networks and other forms of data communications.
Investigate the use of the Internet in researching information dealing with data communications.

5. Course Overview Topics that we are planning to cover:
Fundamentals of data communications
Data transmission basics
Analog & digital communications
Communication media and equipment
Modulation schemes
Data encoding schemes
Transmission Modes
Spread spectrum
Switched circuits
Multiplexing
Error detection and correction
Error control and flow control
Secure communication system
Transmission Media
Wired & Wireless Network
ISP setup

6. Course Overview Course Instructor: Muhammad Waseem Iqbal
Lecture Timings:
Wednesday 02: :30
Friday : :30
Contact Number:

7. Course Overview
Text:
“Data and Computer Communication” 8th Edition by William Stallings
“Data Communications and Networking” 4th Edition by Behrouz A. Forouzan

8. Course Overview The course will consist of: Grading Criteria:
Assignments:
Quizzes:
Term Paper + Presentation:
Midterm:
Final Exam:
The course will consist of:
30-32 lectures
Assignments
Quizzes
1 Final Project / Term Paper
2 Exams (Mid term and Final term)

9. Introduction Definition Of Data Communication
“Data Communication is the exchange of information from one entity to the other using a transmission medium”.
As you can clearly notice, the definition of Data Communication although simple, leaves many questions unanswered:
Exchange ??????
Information ?????
Entities ???????
Transmission ????
Medium ????

10. History of Data Communication
Telegraph 1837 Samuel Morse
Telephone 1876 Alexander Graham Bell
1970’s:
Although development of databases, languages, operating systems, and hardware was strong from 1950s to 1970s, large-scale data communication systems did not emerge until the 1970s.
This was stimulated by 3 major developments:
Large-scale integration of circuits reduced cost and size of terminals and communication equipment
New software systems that facilitated the development of data communication networks
Competition among providers of transmission facilities reduced the cost of data circuits

11. History of Data Communication
TODAY’S EVERCHANGING & BUSY WORLD
Today’s fast world demands better, secure and most of all FAST ways of communication
Gone are the days when you had to wait a couple of weeks to get a letter from USA
Why wait ONE week when you can get the information you require in just a split of a second, using what we know by the name of “Data Communication”.

12. Definition Of Data Communication
When we communicate, we share information
Information can be LOCAL or REMOTE
Between individuals LOCAL communication occurs face to face
REMOTE communication occurs over a long distance
When we refer to computer systems, data is represented in the form of binary units (Bits) i.e. in the form of zeros (0’s) and one’s (1’s)
Also the entities can most of the times be considered to be computers

13. Definition Of Data Communication
Therefore , our earlier definition can easily be modified to:
“Data Communication is the exchange of data (in the form of 0’s and 1’s) between two devices (computers) via some form of the transmission medium.”