A graphic is a digital representation of drawing, chart or photographs. It can also be called a picture or image which contains no motion or animation. Graphic package is an application that can be used to create and manipulate images on a computer. Computer graphics are used in many applications including science, engineering, advertising, multimedia […]
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What is Microsoft Power Point? Microsoft PowerPoint is a presentation program that is incorporated in Microsoft Office suite package. It offers word processing, outlining drawing, graphing and presentation management tools Starting a presentation with Microsoft PowerPoint There are two ways of starting Microsoft PowerPoint Click on start button, choose All Programs and click PowerPoint Double
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Data processing is the collection and manipulation of items of data to produce meaningful information. Data processing is the process of manipulation data to generate information. Data processing methods are techniques used to process/sort different types of data. TYPES OF DATA PROCESSING Batch Processing Online Processing Real-time Processing Multi Programming Multi Processing Time Sharing
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TRANSLATOR These are programs used in converting programs written in other languages to machine language. They are also called language processors. The computer can only execute programs written in machine codes. These codes are tedious for programmers to write; hence they prefer other languages close to human. The translators are then required to change the
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STARTING MICROSOFT ACCESS To start Microsoft Access, follow the steps below: Click start button, the program menu Move to the MS Office menu Click on MS Access Once Access is running, an initial screen will be displayed. From the initial screen, you can either (i) create a new blank database (ii) open an existing database
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What is Data Model?. Data Model can be defined as abstract model whose purpose is to describe how data can be used and represented effectively. A data model is a picture or description which shows how data are to be arranged to serve a specific purpose it determines the structure of data and the information
Data modeling is a process used to define and analyze data requirements needed to support the processes within the scope of corresponding information system in an organization. Creating simple data mode Microsoft Access offers one table, queries, forms, reports, macros and modules and these will be created before creating a data model. Table: All data
Normalization of Database Database Normalization is a technique of organizing the data in the database. Normalization is a systematic approach of decomposing tables to eliminate data redundancy and undesirable characteristics like insertion, updates and deletion Anomalies. It is a multi-step process that puts data into tabular form by removing duplicated data from the relation tables.
File organisation refers to the way in which data is stored in a file and the methods by which it can be accessed. Database is stored as a collection of files. Each file is a sequence of records. A record is a sequence of fields. Data is usually stored in the form of records. Records
PRACTICAL ON INTERNET E-mail is a method of sending digital messages from one computer to another. E-mail is short for Electronic Mail. E-mail is received instantly by the users email provider and mails stay in the mailbox until accessed by the users. Mail boxes have storage limit (limited amount of emails which they can hold
What is internet? Internet or simply “The Net” is a worldwide system of computer networks in which used at any one computer can, if given permission or access, get information from any other computer. It is the largest connected of millions of computers connected to thousands of different networks worldwide. These computers communicate, share, exchange
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What is presentation package? A presentation package is a software package used to display information in the form of a slide show. It provides the resources necessary to give a professional presentation for meetings, lectures, speeches or other similar situations. It enables graphic images to be inserted and manipulated in slide show. Examples of presentation
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Data processing is the process of converting raw fact (data) to information (processed data). It embraces the techniques of sorting, relating, interpreting and computing items of data in order to provide meaningful useful information. Steps in data processing i) Preparation of source document: Here, figures, facts are obtained through different sources like name, age, sex,
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A generation is often referred to the state of improvement in the development of a product. Generation of computer is the advancement of computer technology from time to time. In every generation, the circuitry has become smaller and more advanced than the previous generation. Each generation of computer is characterized by a major technological development.
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Computers can be classified based on the following criteria Development of technology (by generation) Principle of operation (by type) Storage capacity or by configuration (by size) Degree of versatility (by purpose) Classification by types Computers can be classified into three major types based on principles of operations. The three types are Digital computer Analog computer
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Application Areas of ICT ICT in Everyday Life. ICT is an acronym which stands for Information and Communication Technology. It is defined as set of technological tools and resources used to communicate, create, disseminate, store and manage information. The technologies include computer, the internet, broadcasting technologies (radio and television), satellite and telephony. Uses of ICT
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OUTPUT DEVICES These are hardware components used to obtain results from computer after processing. They convert data from machine-readable format into human readable format. Examples of output devices are monitor, printer, speaker, projector, plotter, etc. MONITOR This is an output device that displays the result of processing on the screen. It resembles a T.V set
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COMPUTER SOFTWARE: TYPES, IMPORTANCE, FUNCTIONS AND OS Computer Software is refers to collection of programs (instructions) that cause the hardware to work. A program is a written instruction for a computer to perform a specific task. These are thousands of programs that one can run on a computer. For instance, a graphic program can be