I.S 512 TOPIC 1 COMMUNICATIONS AND NETWORKS. DEFINING COMMUNICATION Communication refers to a process whereby a signal is transmitted from a sender to.

Slides:

Advertisements

Similar presentations

Computers Are Your Future © 2005 Prentice-Hall, Inc.

Advertisements

CSCI 4550/8556 Computer Networks Comer, Chapter 6: Long Distance Communication (Carriers, Modulation, And Modems)

1 Computer Networks and Internets, 5e By Douglas E. Comer Lecture PowerPoints Adapted from the notes By Lami Kaya, © 2009 Pearson Education.

Principles of Management Learning Session # 43 Dr. A. Rashid Kausar.

Chapter-3-1CS331- Fakhry Khellah Term 081 Chapter 3 Data and Signals.

Telecommunications Long distance communication May or may not involve computers.

Computers Are Your Future Tenth Edition Chapter 3: Wired & Wireless Communication Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall1.

Chapter 1 Introduction to Computer Networks and Data Communications.

Chapter 6 Telecommunications & Networks.

Computers Are Your Future © 2006 Prentice-Hall, Inc.

1-1 Introduction to Computer Networks and Data Communications.

Week 1 Things you want to know. Week 1 This is a series of things you want to know as you walk away from the course. What elements make up a communication.

Chapter 3 Data and Signals

Chapter Preview  In this chapter, we will study:  The basic components of a telecomm system  The technologies used in telecomm systems  Various ways.

Lecture 1 Professor: Dr. Miguel Alonso Jr.. Outline Intro to the History of Data Communications A Basic Communication System Elements of Microwave and.

Communications and Networks Chapter 6. Objectives Defines the components required for successful communications Describe uses of communications Identify.

Chapter 8 COMMUNICATION AND COMPUTER NETWORK

Copyright 1998, S.D. Personick. All rights reserved1 Telecommunications Networking I Lecture 1 Overview of Telecommunications Networking I-II.

1 Long-Distance Communication. 2 Illustration of a Carrier Carrier –Usually a sine wave –Oscillates continuously –Frequency of carrier fixed.

7.1 Chapter 7 Transmission Media Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Data Communication & Computer Networks

Introduction to Data communication

Chapter 4 Computer Networks – Part 1

Process Communication and Collaboration

Data Transmission The basics of media, signals, bits, carries, and modems (Part III)

CHAPTER 2 COMMUNICATION, NETWORKS, AND THE WWW. WHAT IS COMMUNICATIONS? A process in which two or more computers or devices transfer data, instructions,

Chapter 1 Introduction to Computer Networks and Data Communications Data Communications and Computer Networks: A Business User’s Approach.

Electronic Communications Electronic communications describes a process in which two or more computers or devices transfer data, instruction, and information.

Data Communication Systems and Networks CSCI 465 Martin van Bommel Lecture 1.

Computer Architecture Lecture 30 Fasih ur Rehman.

Data Communications Chapter 16, Exploring the Digital Domain.

Computers Are Your Future Eleventh Edition Chapter 8: Wired & Wireless Communication Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall1.

NETWORKING CONCEPTS. NETWORK MODEL n/w is a combination of h/w,s/w that sends data from one location to other h/w consist of any physical equipment that.

PMS Software Ltd Electronic Communications A Guide.

Networks. Common Xmit Media Shared Media Networks are a shared communication resource Only one user can access at a time.

1 Network Model. 1-2 Divide and Conquer A method of managing large system.

COMPUTER COMMUNICATION & NETWORKS Presented by MUTAASA AHMED.

MEANS OF COMMUNICATION experthow.com. What are they? What do you know about them?

Introduction to Digital and Analog Communication Systems

Lecture 2 Outline Announcements: No class next Wednesday MF lectures (1/13,1/17) start at 12:50pm Review of Last Lecture Analog and Digital Signals Information.

© 2009 Pearson Education Inc., Upper Saddle River, NJ. All rights reserved.1 Computer Networks and Internets, 5e By Douglas E. Comer Lecture PowerPoints.

3.2 Software Fundamentals. A protocol is a formal description of digital message formats and the rules for exchanging those messages in or between computing.

What is Data Communication? Data communication is the process of collecting and distributing data(text, voice, graphics, video, etc) electrically from.

Communication Systems Concepts شال 352 Banan Mahmoudi CHAPTER 1.

Chapter 2 Network Models

Postacademic Interuniversity Course in Information Technology – Module C1p1 Chapter 4 Communications, Theory and Media.

MANAGEMENT INFORMATION SYSTEM. INFORMATION QUALITY DIMENSIONS OF INFORMATION QUALITY VALUE OF INFORMATION PROCESS OF INFORMATION GENERATION AND COMMUNICATION.

Lecture Focus: Data Communications and Networking  Transmission Impairment Lecture 14 CSCS 311.

Computers Are Your Future © 2008 Prentice-Hall, Inc.

Lesson 2—Networking BASICS1 Networking BASICS Network Media Unit 1 Lesson 2.

Communication Technology. Telephone There is not much difference between the way a string telephone and a real telephone work except that electric current.

TELECOMMUNICATION. Communication over a long distance.

Data Communication & Networking. Data communication Not to be confused with telecommunication –Any process that permits the passage from a sender to one.

Mr. Sathish Kumar. M Department of Electronics and Communication Engineering I’ve learned that people will forget what you said, people will forget what.

7.1 Chapter 7 Transmission Media Lecturer: Mrs. Rohani Hassan Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Week 7 Managing Telecommunications & Networks. Effective communications are essential to organizational success Define the terms communications and telecommunications.

INTRODUCTION. Electrical and Computer Engineering  Concerned with solving problems of two types:  Production or transmission of power.  Transmission.

Data Communication IT-402.

Chap. 2 Network Models.

Telecommunications & Networks

COMPUTER NETWORKS and INTERNETS

Digital Subscriber Line

Computers Are Your Future Eleventh Edition

Communications, Networks, the Internet, and the World Wide Web

Network Protocol Layers

Computers Are Your Future

Introduction and Overview

Data Transmission And Digital Communication

Presentation transcript:

I.S 512 TOPIC 1 COMMUNICATIONS AND NETWORKS

DEFINING COMMUNICATION Communication refers to a process whereby a signal is transmitted from a sender to a receiver through a communication medium. The signal contains a message composed of data and information

TYPES OF COMMUNICATION TELECOMMUNICATION Telecommunication refers to the electronic transmission of signals from the sending unit to the receiving unit through a telecommunication medium.

An information source. Presumably a person who creates a message. The message, which is both sent by the information source and received by the destination. A transmitter. A carrier or channel, which is represented by the small unlabeled box in the middle of the model. The most commonly used channels include air, light, electricity, radio waves, paper, and postal systems. Note that there may be multiple channels associated with the multiple layers of transmission, as described above. Noise, in the form of secondary signals that obscure or confuse the signal carried. Given Shannon's focus on telephone transmission, carriers, and reception, it should not be surprising that noise is restricted to noise that obscures or obliterates some portion of the signal within the channel. This is a fairly restrictive notion of noise, by current standards, and a somewhat misleading one. Today we have at least some media which are so noise free that compressed signals are constructed with an absolutely minimal amount information and little likelihood of signal loss. In the process, Shannon's solution to noise, redundancy, has been largely replaced by a minimally redundant solution: error detection and correction. Today we use noise more as a metaphor for problems associated with effective listening. A receiver. A destination. Presumably a person who consumes and processes the messag

DATA COMMUNICATION Data communication is a specialized subset of telecommunication that is used to send “Data and information” from one computer to another in order to communicate with each other

USES OF COMMUNICATION TECHNOLOGIES Electronic Mail ( ) Voice Mail Facsimile (Fax) Telecommuting Videoconferencing GroupWare The Internet