TOPIC 4: THE INTERNET Concepts of Internet The Internet Describe the Internet Internet is a wide world connection of computer which enables sharing of resource like files and folders, picture and music, teaching materials like notes / tutorials and computers. This is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link devices worldwide. Communication between networks is called inter networking. Therefore internet comes from the word inter networking meaning a connection of data communication. The communication in which the end instruments are computers. The internet is a worldwide public networks that interconnect thousands of…
Author: Msomi Bora
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TOPIC 3: COMPUTER NETWORKS AND COMMUNICATIONS Introduction to Local Area Network (LAN) and Wide Area Network (WAN) The Computer Network Describe a Computer Network A network can be defined as a group of computers and other devices connected in some ways so as to be able to exchange data. Each of the devices on the network can be thought of as a node; each node has a unique address. Addresses are numeric quantities that are easy for computers to work with, but not for humans to remember. Example: 204.160.241.98 Some networks also provide names that humans can more easily remember…
TOPIC 2: SPREADSHEET Concept and Terminologies The Spreadsheet Program Describe the Spreadsheet Program A spreadsheet is an interactive computer application for organization, analysis and storage of data in tabular form. Alternatively referred to as a worksheet, a spreadsheet is a file made of rows and columns that help sort data, arrange data easily, and calculate numerical data. Examples of spreadsheet programs are: Google sheet iWork numbers Libre Office Lotus 1-2-3 Lotus Symphony Microsoft Excel Open Office Today Microsoft Excelis the most popular and widely used spreadsheet program (figure 1) The Spreadsheet Terminology Explain Spreadsheet Terminology TERMINOLOGIES USED IN SPEADSHEET (EXCEL)…
TOPIC 1: WORD PROCESSING Starting and Ending a Wording Processing Program The Meaning of Word Processing Explain the Meaning of Word Processing Word processing is the process of creating, editing, storing and printing typed documents. One is able to write text, store it electronically, display it on a screen, modify it by entering commands and characters from the keyboard, and print it. The Importance of Word Processing Explain the Importance of Word Processing The importance of word processing are as following: Saves time— Word processing helps teachers use preparation time more efficiently by letting them modify materials instead of creating…
COMPUTER NOTES FOR FORM ONEClick the links below to view the notes:TOPIC 1 – INFORMATIONTOPIC 2 – THE COMPUTERTOPIC 3 – THE COMPUTER SOFTWARETOPIC 4 – COMPUTER HANDLINGTOPIC 5 – COMPUTER EVOLUTION
TOPIC 5: COMPUTER EVOLUTION Early Computer Development The historical background of development of computer Explain historical background of development of computer Actually speaking electronic data processing does not go back more than just half a centaury i.e. they are in existence merely from early 1940’s. In early days when our ancestor used to reside in cave the counting was a problem. Still it is stated becoming difficult. When they started using stone to count their animals or the possession they never knew that this day will lead to a computer of today. People today started following a set of procedure…
TOPIC 4: COMPUTER HANDLING Computer handling is sometimes called computer maintenance. Computer handling is the process of caring the computer and its accessories so that it can perform its work properly. Power Management This is the process of dealing with power disturbances. Power disturbances include: surge: is the voltage increase above 110% of the normal voltage brown out: this is power sags which last just less than a second. it is caused by power overload sparks: this is power overload which last for fractions of a second. It is caused by starting and stopping of heavy welding and lightening equipment. liquid: liquid causes short circuits dust:…
TOPIC 3: THE COMPUTER SOFTWARE Software Concepts The computer software Define computer software Software refers to the programs that control the operation of a computer . Software is is a program and its documentation in a nutshell the term software describes the programs that are used to operate the computer system. Types of computer software State types of computer software There are two types of computer software i) Application Software ii) System Software The difference between systems software and application software Differentiate systems software from application software DIFFERENCE BETWEEN SYSTEM SOFTWARE AND APPLICATION SOFTWARE SYSTEM SOFTWAREAPPLICATION SOFTWARE System software is used…
TOPIC 2: THE COMPUTER Significance of Computer The Computer Define a computer A computer can be defined in several ways but the best definition of a computer should contain main terms like INPUT, PROCESS, STORAGE and OUTPUT. The following are various definitions of the computer A Computer is: An electronic machine that processes raw data to produce information Is an electronic device that receives or accept input[data] processes it and then produces output or information Is a machine programmed to accept data process it into useful information [output] Is an electronic devices that works under the control of stored program,…
TOPIC 1: INFORMATION Concept of Information The meaning of Data Define Data Data and information are used interchangeably but they are quite different. Consider this example: when a student is admitted at school he/she fills a form with details such as parents names, date of birth, place of domicile , address ,phone number and so on, those details are referred as data. When such data are used by the school authority then the school get the information about a particular student. Data can be defined as facts about something that can be used in calculating, reasoning or planning. Data (Input) is a collection of unprocessed items, which can…