Lecture 10 - Introduction to computer networks and data communications. After studying this chapter you will be able to understand: Introduction to telecommunications, basic components of communications, telecommunications media, rate of data transfer, define the basic terminology of computer networks,. | Lecture 10 Introduction to Computer Networks and Data Communications Summary of Previous In the previous lecture we have learnt, Managing business data MS Access 2007 Purpose and Data Organization Creating a Database Table Form Query Report Summary of Previous Data Presentation Purpose and Types of presentations Microsoft Power Point A New presentation Design Templates Animation Slide Master Adding Pictures Working With Text Graphs and Charts Today’s Topics Introduction to Telecommunications Basic Components of Communications Telecommunications Media Rate of data transfer Define the basic terminology of computer networks Network Topology Classification of Computer Networks Network Devices Recognize the individual components of the big picture of computer networks Today’s Topics Computer Network Layouts Microcomputer-to-local area network Microcomputer-to-Internet Local area network-to-local area network Personal area network-to-workstation Local area network-to-metropolitan area network Local area network-to-wide area network Today’s Topics Sensor-to-local area network Satellite and microwave Cell phones Computer terminal / microcomputer-to-mainframe Summary Introduction Everyone is using a computer network today. Mass transit, interstate highways, 24-hour bankers, grocery stores, cable television, cell phones, businesses and schools, and retail outlets support some form of computer network What is Telecommunication? Transmission of different forms of data such as text, audio, video, images, graphics It occurs between one set of electronic devices over media to another set of geographically separated electronic devices. Basic Components of Communications Sender: Person or device sending the message Receiver: Person or device receiving the message Medium: What carries the message from sender to receiver Sender Person Receiver Person Channel/Medium A short distance of air Message Voice Face-to-face Communication Sender Telephone, Computer, Video . | Lecture 10 Introduction to Computer Networks and Data Communications Summary of Previous In the previous lecture we have learnt, Managing business data MS Access 2007 Purpose and Data Organization Creating a Database Table Form Query Report Summary of Previous Data Presentation Purpose and Types of presentations Microsoft Power Point A New presentation Design Templates Animation Slide Master Adding Pictures Working With Text Graphs and Charts Today’s Topics Introduction to Telecommunications Basic Components of Communications Telecommunications Media Rate of data transfer Define the basic terminology of computer networks Network Topology Classification of Computer Networks Network Devices Recognize the individual components of the big picture of computer networks Today’s Topics Computer Network Layouts Microcomputer-to-local area network Microcomputer-to-Internet Local area network-to-local area network Personal area network-to-workstation Local area .
