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Data and Information for SS1 Definition of Data Data are raw facts. They are figures, words and symbols that have not been processed or put into meaningful form. Data can be referred to as raw material from which information is produced. Types of data 1. Numeric data: Data consisting of digits and not letters of alphabets or special character. E.g. 0 – 9 2. Alphabetic data: Data consisting of…

Computer Problem Solving Skills for JSS2  Concept of Computer Program and Programming Language If you want a computer to solve a given problem, you need a computer program. A computer program is a sequence of related instruction (command) that tell the computer how to accomplish a specific task. A program can also be defined as a set of instruction that is executed by the…

Output Devices for SS1 Definition of Output devices Output devices are devices that enable the computer to communicate the results of data processing carried out by it to the user. These devices enable the computer to display text, graphics (pictures and images) and produce sound. Examples of computer output devices include monitor, printer, speaker, plotter, braille embosser etc. Features and…

ICT as a Transformation Tool for JSS2 ICT is an acronym that stands for Information and Communication Technology. Information: Information is refers to knowledge obtained from reading, investigating, study and research. Communication: Communication is an act of transmitting messages. Technology: Technology is the application of scientific knowledge for practical purpose especially in…

Operating System for JSS2 Definition of an Operating System i. An operating system (OS) is system software that manages the hardware and software resources of the computer. ii. An operating system is the software that controls the overall activity of a computer. iii. The term operating system (OS) denotes the collection of program that act as an interface between the user’s program and the…

Overview of Computer System for SS1 Definition of Computer System    Computer system can be defined as an electronic device which manipulates data and produces output using step-by-step instructions. A programmable machine that receives, stores, retrieves, processes and outputs data. A computer may be defined as a machine that can solve problems by accepting data, performing certain operations…

Basic Computer Operations for SS1 Definition of Booting In computing, booting (also known as “booting up”) is a bootstrapping (self-starting) process that starts the operating system when the user turns on a computer system. Booting can also be defined as the initial set of operations that the computer performs when power is switched on. Description of the Booting process When the computer’s…

Spreadsheets for JSS3 Definition of Spreadsheet 1. A Spread sheet application is a large sheet having data and information arranged in rows and columns 2. Spreadsheet is application software that tracks, analyzes, and charts numeric information. 3. A spreadsheet is an interactive computer application program for organization, analysis and storage of data in tabular form 4. Spreadsheet is a…

Networking and Network Topology for SS3 Definition of Network and Networking A computer network consists of a collection of computers, printers and other equipment that are connected together so that they can communicate with each other. It is also defined as a group of two or more computer systems linked together. Computer Networking is the scientific and engineering discipline concerned with…

Computer Career Opportunities for JSS3   Computer Professionals   Definition: Computer professionals are the individuals that have obtained sufficient education and training in the field of computers and earn their livelihood from their chosen profession. Computer professionals and their functions are discussed below. COMPUTER PROFESSIONALS DUTIES/FUNCTIONS   1. Database Administrator  1.…

Input Devices for SS1 Definition of Input device Input device is any hardware component that allows a user to enter data and instructions into a computer. Any peripheral used to provide data and control signals to a computer. Without any input devices, a computer would only be a display device and not allow users to interact with it. Before computer processing, data must be entered into the…

Computer Files for SS2 Definition of some Terms 1. Computer file is defined as the smallest meaningful unit of data representation within a computer 2. A computer file is a block of arbitrary information, or resource for storing information, which is available to a computer program and usually on some kind of durable storage. File Functions: Files are used to do one or more of the following…

Presentation Packages for SS1 Definition A presentation program is a software package used to display information in the form of a slide show. It has three major functions: an editor that allows text to be inserted and formatted, a method for inserting and manipulating graphic images, and a slide-show system to display the content. Examples oSlideWiki, Audience (software), Ease, Emaze…

  Internet for SS2 Definition of Internet Internet is a worldwide network of computers that share information. It is also defined as a global system of interconnected computer networks that use the Internet protocol suite to link devices worldwide. Internet Terms 1. Cyber café: An internet café or cyber café is a place which provides internet access to the public, usually for a fee. 2. Cyber…

DATA PROCESSING FOR JSS1 Definition of Data Data are raw facts. They are figures, words and symbols that have not been processed or put into meaningful form. Data can be referred to as raw material from which information is produced. Data is the plural of datum. Types of Data 1. Numeric data: Data consisting of digits and not letters of alphabets or special character. E.g. 0 – 9 2. Alphabetic…

BASIC Programming II (Built-in Functions) for SS2 BASIC built in functions are predefined functions that performs a wide range of operation. A function is a structure that simplifies a complex operation into a single step. BASIC has a number of built-in functions that greatly extends its capability. They include the following: 1. SQR Function : The SQR function calculates the square root of a…