Computer Studies/ICT/IT (All Classes)

There are four classification of computer by size name: (i) Micro computer (ii) Mini computer (iii) Mainframe computer (iv) Super computer Micro Computer A micro computer is the smallest computer that has a processor on a single silicon chip. Its CPU is a micro processor chip. Examples of micro computers are personal computer (PC), laptop […]

Digital Computer This is the type of computer in which data are represented in digital or in discrete form, for example, 0, 1,2,3,4,5, etc. It is a type of computer that is used for processing numeric information. Digital computer measures physical quantities by using number to represent quantities. E.g. digital stop watch, electronic watch, calculator,

A computer room is a place where computers and other computer devices are kept for use by students or people. A computer room is a place which provides computer services to students who attend the institution on for use in curricular computer classes. A computer room is a place where computers are kept for use.

ICT covers any product that will store, retrieve, manipulate, transmit or receive information electronically in a digital form. E.g. computer, digital television, email Information Technology (I.T) refers to the systems used to store and manage information through the use of technology the use of technologies such as computers. Information System (I.S) means a computer-based system

ICT in Agriculture: The application of ICT in agriculture is increasing important. E-agriculture is an emerging field focusing on the through improved information and communication process more specifically, e-agriculture involves the conceptualization, design, development, evaluation and application of innovative ways to use information and communication technologies (ICT) in the rural domain, with a primary focus

Digital divide is the gap between people with effective access to digital and information technology and those with very limited or no access at all. It is the gap between those who use computers and the internet and those who do not. It is the unequal access by some members of society to information and

INFORMATION AND COMMUNICATION TECHNOLOGY (ICT) Information and Communication Technology is an umbrella term that includes all technologies for the manipulation and computation of information. ICT are the Computation and Communication facilities and features that variously support teaching, learning and a range of activities in education.  Communication is the process by which people exchange information or

WEB SEARCH ENGINE A web search engine is a software system that is designed to search for information on the World Wide Web. To search results are generally presented in a line of results. The information maybe a mix of web pages, images, and other types of files. A search engine is a web-based tool

ELECTRO-MECHANICAL COUNTING DEVICES Electro-mechanical counting devices are those counting devices that could be operated both electrically and mechanically These includes the following Blaise Pascal Machine Gottfried Leibniz Machine Joseph Jacquard Loom Charles Babbage Analytical Engine BLAISE PASCAL CALCULATING MACHINE: Blaise Pascal was a French man who invented a new kind of computer in 1642. The

Electronic counting devices are the modern computer. The electronic counting devices are as follows: Herman Hollerith Punch Card John Von Neumann Machine Modern Computer. HERMAN HOLLERITH PUNCH CARD In 1881, Herman Hollerith began designing a machine to tabulate census data more efficiently than traditional hand method. Herman Hollerith invented and used a punched card device

Early counting devices: Early people developed certain kinds of counting device. As man advanced the counting also become more and more complex. ABACUS This is the earliest counting device. It was invented 2000 years before it has two section, heaven and earth. An Abacus is a manual aid to calculating that consist of beads that

A computer system or tool is a collection of hardware and software components designed to provide an effective tool for computer system and are used in everywhere to assist us in the various task we perform. CHARACTERISTICS OF COMPUTERS AS TOOL FOR DATA PROCESSING SPEED A computer is a very fast device, it can carry

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  

FILE: A file is the common storage unit in a computer. All data are contained in a file. A computer file is a resource for storing information, which is available to a computer program and is usually based on some kind of during storage. FOLDER: A folder is a graphical user interface, a container for

Information transmission is the exchange of information from the sender to the receiver in any form, i.e. through voice, data, text and image over any kind of media, hand written medium, etc. There are two methods of information transmission namely: Ancient methods of information transmission Modern methods of transmitting information ANCIENT METHOD OF TRANSMISSION ORAL

ICT covers any product that will store, retrieve, manipulate, transmit form e.g. Computers, digital T.V, email, etc. Examples of ICT (i) Radio (ii) Television (iii) GSM (iv) Cellular network (v) Computer (vi) Internet (vii) Satellite communication ICT TOOLS Medium to record information – e.g. magnetic disk/magnetic tape, optical disk (CD/DVD), flash memory Broadcasting information –

Evolution of information and communication technology (ICT) has passed through different stages, namely; invention of printing stage, invention of radio and television stage, invention of computer stage as well as linking up computers with information and communication technology (ICT). INVENTION OF PRINTING: This is a stage in which printing technology has been invented. It involves

Information is processed data. Information is useful and meaningful to the users. Unprocessed information is called data. The singular form of DATA is called DATUM. Qualities/Characteristic of Good information A good information must process the following qualities/characteristics. Timely: A good information must be timely. It should be communicated at the most appropriate time. Communication: A

What is Data? Data is the raw material for data processing. It is a representation of unprocessed facts about people, places, events, objects, or transactions recorded from which information can be prepared. It can be represented with the help of character like alphabets (A-Z, a-z), digits (0-9) or special characters (+,-, /, *, <,>, =).

TECHNOLOGY OF DIFFERENT INFORMATION AGE Technology is a term used to describe methods, means, materials and devices developed to solve human challenges/problem. 1. Stone Age: The early men first made farming tools, which are used for production of crop/food or hunting animals. The Stone Age is a period which was characterized by the use of