December 14, 2022

Introduction Data refers to the raw facts that do not have much meaning to the user and may include numbers, letters, symbols, sound or images. Information, on the other hand, refers to the meaningful output obtained after processing the data. Therefore the data processing refers to the process of transforming raw data into meaningful output […]

Introduction In Book 1 of this series, we learnt that computers are classified according to functionality, physical size and purpose. We saw that when classified according to functionality, computers can be analog, digital or hybrid. Digital computers process data that is in discrete form while analog computers process data that is continuous in nature. Hybrid

TOPIC 1 : DATA REPRESENTATION IN A COMPUTER – Click to view TOPIC 2 : DATA PROCESSING – Click to view TOPIC 3 : ELEMENTARY PROGRAMMING PRINCIPLES – Click to view TOPIC 4 : SYSTEM DEVELOPMENT – Click to view TOPIC 5 : PROGRAMMING WITH VISUAL BASIC – Click to view

6.1 Introduction and definition Computer information systems are becoming more and more important in daily life. Governments, private enterprises and individuals have found the need to protect data and information that is in their custody against unauthorized access, disclosure or damage. This is because of the rise of the information age and society leading to

Introduction Computers can be connected together using data transmission media like cables, to communicate with one another. Communication in this case will be in the form of exchange of data and information. Such interconnection of computers to achieve message transfer is called networking. This is because the computers are linked to form a net.  In

Introduction Have you ever asked yourself how newspaper and book publishing companies manage to produce publications that are attractive with creative layouts and graphics in large volumes? They do this through a special process called publishing. Publishing is the process of producing publications like newspapers, cards, pamphlets, pictures, calendars etc. that have special text and

Introduction to databases We are often faced with the need to keep, search for or give a report of daily experiences. This is the reason why many people use data storage methods like recording daily experiences in a diary. Traditionally, human beings used to manage data and information manually by using simple devices. However these

2.1 Definition of a spreadsheet A spreadsheet is essentially a ledger sheet that lets you enter, edit and manipulate numeric data. There are two types of spreadsheets namely: The manual spreadsheet. The electronic spreadsheet. A manual spreadsheet is the most commonly used type by book keepers as a ledger book with many sheets of papers

What is a word processor? A word processor is an application software that enables a person to create, save, edit, format and print text documents. Word processing is the act of using a word processor. Examples of word processors Examples of word processors include, Microsoft Word, Corel WordPerfect, WordStar, Lotus WordPro and many others. A

TOPIC 1 : WORD PROCESSORS – Click to view TOPIC 2 : SPREADSHEETS MS – EXCEL – Click to view TOPIC 3 : DATABASES – Click to view TOPIC 4 : DESKTOP PUBLISHING ( DTP ) – Click to view TOPIC 5 : INTERNET AND E – MAIL – Click to view TOPIC 6 :

TOPIC 1 : INTRODUCTION TO COMPUTERS – Click to view TOPIC 2 : COMPUTER COMPONENTS – Click to view TOPIC 3 : SAFE USE AND CARE OF COMPUTERS – Click to view TOPIC 4 : OPERATING SYSTEMS – Click to view

FORM 1 SECONDARY SCHOOL NOTES – Click to download  FORM 2 SECONDARY SCHOOL NOTES – Click to download FORM 3 SECONDARY SCHOOL NOTES – Click to download FORM 4 SECONDARY SCHOOL NOTES – Click to download