THE KEYBOARD AND TYPES OF KEYBOARD CONTROL KEYS:they are used in line with other keys to instruct the computer to perform specific tasks. They are ctrl, del Esc and Alt. CURSOR- CONTROL KEYS: otherwise known as curdor manipulations keys allow the user to move the cursor to the left, right, up one line and down […]
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Definition of the Keyboard The keyboard is an input device that is used to send data into the computer. Its cable must be connected to a port of the system unit before it can operate. It is similar to an ordinary typewriter keyboard. The keyboard is used mainly to enter alphabets from A – Z,
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There are different basic types of processing; namely: Batch processing Real time processing Time sharing processing Demand processing Batch processing In Batch processing, data are gathered over a period of time and the batch of transactions is processed together. It employs sequentially processing technique which consists of processing the first record of the file sequence,
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Data processing is the process of converting data into meaningful information. It involves collection of data or gathering of data. Data processing often refers to the use of computers in commercial applications as distinct from engineering applications. It is also an act of collecting data, assembling them and making them available to the processor in
ADVANTAGES OF USING WORD PROCESSING PACKAGES The use of computer allows for neat jobs. It makes typing pleasurable. There is room for corrections such that it does not leave any scar on the document. With the use of computer, text could be formatted to suit the user’s taste. It allows Mail Merging operation thereby relieving
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INTRODUCTION TO WORD PROCESSING PACKAGES A word processing package enables you to type in and manipulate text. It helps you to enter, store, format, copy and print text. It is a software that turns the computer into a sophisticated typewriter. With any type of word processing software, you can produce any kind of document, large
Computers functions best when used in the right environment. The right environment can be refers to as the computer room/laboratory. Computer room is a room specially created for keeping computers and other peripheral devices. COMPUTER ROOM REQUIREMENT Computer system Furniture Tiles Electricity source Stabilizer Air conditioners/fans Mouse and mouse pad Uninterruptible Power Supply(UPS). Printer Speaker
A System unit also known as a base unit, is electronic circuitry housed within the computer cabinet. It is the part of the micro computer that contains the Central Processing Unit (CPU). THE INTERNAL FEATURES OF THE SYSTEM UNIT Is the main body of a personal computer, typically consisting of a plastic/metal enclosure containing thefollowing:
THE MONITOR The monitor is an output device used to display information. The monitor is also called Visual Display Unit (VDU). It is similar to ordinary television screen. The output on a monitor is called softcopy. This output is available to the user only for as long as another output has not replaced it. Thus,
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SPREADSHET TERMINOLOGIES A cell is a space in a worksheet formed by the intersection of a row and a column. An active cell is the cell that is currently worked upon. E.g cell G7 is the active cell the above diagram. ROW: is defined as the horizontal space that is going across the window.
SPREAD SHEET Spreadsheets are like lined paper with columns. The sheet itself comprises of columns (vertical) and rows (horizontal) which are in turn, made up of cells. A spreadsheet is the computer equivalent of a paper ledger sheet. Spreadsheet can be defined as the combination of rows and columns used in performing arithmetic calculations.
There are various forms or ways by which database can be set up. They include: Flat file database Relational database Hierarchical database Network database Operational database Distributed database End user database FLAT FILE DATABASE This is the traditional data file storage system ideal for storing small amounts of data that needs to be humanly
Database is an application that is used to store information in a structured way. It is a collection of records or data in an organized form. A database is an organized collection of related information that allows the storage of different types of record with appropriate interconnections. Databases are designed to offer an organized mechanism
USES OF DIGITAL LITERACY In Education: digital literacy is more than having the knowledge of how to use a computer, what your software program does or the function of the hardware but also about using that knowledge to actually facilitate the learning process. Educators are often required to be certified in digital literacy to teach
The term digital describes electronic technology that generates stores and processes data in terms of two states which is either positive or negative, 0 or 1. However, literacy is the ability to read and write or the ability to use language to read, write, listen and speak. Digital literacy is a term that refers
OLD ECONOMY Old economy is the economy system mainly based on subsistence farming. It involves trade by barter. It is associated with the under-developed or developing countries of the world. FEATURES OF OLD ECONOMY Its processes were time consuming. It required a lot of labour. It was mechanically driven. Scarcity of labour and low
Digital Divide is used to describe the division of the world into two different groups. i.e. those that have access to the internet and those who do not have access to the internet. In other words, it is the unequal access by some members of the society to information and communication technology. The term global
A search engine is a software program or script available through the Internet that searches documents and files for keywords and returns the results of any files containing those keywords. A search engine is a site on the WWW that allows you to search for other websites. It is more powerful than a web directory. It will search the web or the basis
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The word “INTERNET” stands for International Network simply put as NET. It comprises of all computers around the world, connected together to share resources and information irrespective of distance and/or geographical location. The Internet is a worldwide communication medium or pool from where people all over the world could exchange retrieve, disseminate and store information
Human ware refers to the human beings that use the system. In other words, the users of the computer system are the end – users and professional alike. REASONS FOR CARING FOR COMPUTER USERS Reduce fatigue Using the computer for a long time causes fatigues, tiredness, and other forms of human unrest. This situation, if
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