Accessing Information Using Computer Systems

INTRODUCTION

With the introduction of the Internet and the World
Wide Web, students are able to access information
faster and more efficiently using modern Computer
Systems. In the past, one had to visit national and
school libraries and spend large amounts of time
accessing information. Presently any individual can
quickly access, save and print information from any
location. One can access the internet from Cyber
Cafes, schools, mobile phones, at home and even at
modern libraries through internet service providers
and telecommunication links. Apart from the internet,
information e.g. encyclopedias, tutorials and documentaries
can be accessed from Compact Discs which
are read from computer systems.

Components Of A Computer System
Modern computer systems consist of a central
processing unit, primary storage, secondary storage,
input, output and communication devices.
• The central processing unit (CPU) manipulates
data and controls the other parts of the computer
system

• Primary storage (RAM) temporarily stores data
and program instructions during processing.
• Secondary storage (hard disk drives) stores
data and instructions when they are not used in
processing.

INTERNAL ORGANIZATIONAL STRUCTURE OF BUSINESS 101
• Input devices (keyboard, mouse) convert data
and instructions for processing in the computer.
• Output devices (monitor, printer) present data in
a form that people can understand, and
• Communications devices (modems) control the
passing of information to and from communications
networks.