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Introduction The era of computers and automated information and communication technology has brought both blessings and disappointments in the workplace. Some people have acquired very well paying jobs while others have lost theirs. For example an ordinary typist has been Read More …

Introduction This era of information and communication technology (ICT) continues to influence our lifestyle both positively and negatively. This chapter seeks to explain some of the issues that result from the use of ICT in the society. Issues resulting from Read More …

Introduction Computers play an important role in every aspect of our society today. Hardly does a day pass without one coming across a computer system that is used in offering services that were initially done manually. In this chapter, we Read More …

Definition of terms used in networking. A computer network can be defined as a collection of computers linked together using transmission media for the purpose of communication and resource sharing. The term transmission media refers to any physical or non-physical Read More …

TOPIC 1 : INTRODUCTION TO NETWORKING AND DATA COMMUNICATION – Click to view TOPIC 2 : APPLICATION AREAS OF INFORMATION AND COMMUNICATION TECHNOLOGY – Click to view TOPIC 3 : IMPACT OF INFORMATION AND COMMUNICATION TECHNOLOGY (ICT) ON SOCIETY – Read More …

Introduction In the previous chapter, we studied how to develop a system using some system analysis and design methods without necessarily referring to any particular programming language. Therefore, we have been looking at what a system analyst ought to do Read More …

Introduction The concept of a system emerged from early psychologists who believed that the mind was a whole unit, rather than a collection of psychological parts as the belief was by that time. However, it was Ludwig von Bertalanff, a Read More …

Introduction Human beings have evolved from the Stone Age to a highly sophisticated and advanced society by inventing things like the wheel, fire, transistors and today’s ultra modem devices like computers. The idea of computers started way back in the Read More …

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. Read More …

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 Read More …