MS PowerPoint System The following are the key operations that can be performed in MS PowerPoint: Creating a new presentation Designing the presentation Saving a new presentation Adding slides to the presentation Printing the presentation
MS PowerPoint System ◼ The following are the key operations that can be performed in MS PowerPoint: Creating a new presentation Designing the presentation Saving a new presentation Adding slides to the presentation Printing the presentation
Data Communications and Networks
Data Communications and Networks
Introduction Computers were originally developed as standalone,single-user systems.Stand-alone computers can receive user's data, manipulate them and provide useful information for making decisions.Here,the user uses his own data for his own decision making purposes.When the use of computers spread across government offices and business organizations,a number of issues were raised. 口 What if a user wants to share his computer generated information with other colleagues? ▣ What if a user want s to explore the possibility of using certain information stored else where? Theses issues were addressed by the subsequent developments in software,hardware and communication technologies which have enabled the computers to communicate between each other and exchange information quickly and accurately and at any time
Introduction ◼ Computers were originally developed as standalone, single-user systems. Stand-alone computers can receive user’s data, manipulate them and provide useful information for making decisions. Here, the user uses his own data for his own decision making purposes. When the use of computers spread across government offices and business organizations, a number of issues were raised. What if a user wants to share his computer generated information with other colleagues? What if a user want s to explore the possibility of using certain information stored else where? ◼ Theses issues were addressed by the subsequent developments in software, hardware and communication technologies which have enabled the computers to communicate between each other and exchange information quickly and accurately and at any time
Introduction The process of electronic transfer of information between two locations is known as data communication.The five basic elements of data communication are: Message:It is the information to be communicated.It may be in the form of text,pictures,audio,video,or any combination of these. Sender:It is the device that creates and transmits the information. Receiver:It is the device that receives the information. Medium:It is the communication channel through which the information travels from sender to receiver.It could be a physical wire or radio waves. Protocol:It represents a set of rules that governs the communication process between the sender and the receiver. Data communication may occur in a simple point-to-point mode or in a multipoint mode where more than two computers are connected together in the form of a network.A network is a system of interconnected computers that can communicate with one another to share applications and data
Introduction ◼ The process of electronic transfer of information between two locations is known as data communication. The five basic elements of data communication are: Message: It is the information to be communicated. It may be in the form of text, pictures, audio, video, or any combination of these. Sender: It is the device that creates and transmits the information. Receiver: It is the device that receives the information. Medium: It is the communication channel through which the information travels from sender to receiver. It could be a physical wire or radio waves. Protocol: It represents a set of rules that governs the communication process between the sender and the receiver. ◼ Data communication may occur in a simple point-to-point mode or in a multipoint mode where more than two computers are connected together in the form of a network. A network is a system of interconnected computers that can communicate with one another to share applications and data