INTRODUCTION OF
COMPUTER
A computer is an electronic machine that performs
calculations based on a set of instructions.
The first computers were huge, room-sized machines that
took teams of people to build, manage, and maintain. The computer systems of
today are exponentially faster and only a fraction of the size of those
original computers.
TYPES OF COMPUTER
a.
Super
computer:
Is most power full available. This computer is high capacity, computer that run
continuously and being use by big organization big corporation and big
government institutions. User of computer include NASA and US government some
big school companies.
b.
Main frame computer:
Less power full computer than super computer but capable to great processing speed,
multitasking capability and high data storage. They are most used in bank to
process information of depositor and millions of daily transactions.
c.
Mid- range computer / Minicomputer:
Are used in medium sized of companies for specific purposes. They may be used
in for certain assembly line operations or manufacturing stage in a big
companies
d.
Microcomputer:
Are most common and widely used computer today. There are two types which are desktop computer
and notebook
(laptop) computer.
e.
Tablet
personal computer:
Is a fancy notebook that has a swivel design and can accept handwriting using
digital pen.
f.
Handheld
computer: Are smallest computer that are designed to fit in
one hand or palm that is why they are also called palm-top computers. This
computers combine pen input personal organizer tools and command
Positive Impact of Computer -
o The work can be done in very less time.
o More information can be stored in small space.
o Multitasking and multiprocessing capabilities
of data.
o Easy to access data.
o Impartiality.
o Documents can be kept secret.
o Error free result.
o It can be used for various purposes. i.e. It
can be used in any type of work.
Negative Impact of
Computer -
o Highly expensive.
o Accidents.
o Data piracy.
o Increased Unemployment.
o Huge data and information can be lost
sometimes.
o Fast changing computer technology.
o Service distribution.
o Illiteracy of computing and computers.
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