Computers are found in practically
every household today. Everywhere you look, people have access to a
Personal Computer, someway or another. As computers get more
advanced, the demand for a better computer gets greater.
Personal Computer (PC), machine
capable of repetitively and quickly performing calculations and
instructions. Designed to be used by a single person, a PC is
smaller, less expensive, and easier to use than other classes of
computers, such as supercomputers, mainframe computers, and
workstations. However, it usually has less computational power.1
First appearing as massive machines
seen only in areas of high
technology, the computer eventually
found its way into homes and offices in
the smaller, more accessible form of
the PC. They have revolutionized
entertainment, science, the media,
art, medicine, education, and business
because they provide computational
abilities at a low cost to people with no
programming experience. PCs enable
artists to envision and manipulate
images. Musicians use them for
learning, creating, and recording music.
Businesses track finances and
forecast company performance using PCs.
Foreign correspondents can compose
news stories on portable PCs, called
laptops, and electronically submit
these stories from remote locations. Many
people work at home and communicate
with fellow workers via their PCs in a
practice known as telecommunications.
PCs are also able to interface with
worldwide communication networks,
such as the Internet, and the graphics-
based information database known as
the World Wide Web to find information
on any subject. With a PC and a
modem, a user is able to connect to
information on local, national, and
international networks via phone lines. As
computers and software have become
easier to use, or more ?user friendly,?
many people are finding them both
useful and necessary for their jobs. As a
family tool, this computer may be
used for school, research, communication,
record keeping, work, and
Mainframe Computer, a high-level
computer designed for the most
intensive computational tasks.
Mainframe computers are often shared by
multiple users connected to the
computer via terminals. The most powerful
mainframes, called supercomputers,
perform highly complex and time
consuming computations and are used
heavily in both pure and applied
research by scientists, large
businesses, and the military.
In conclusion, mainframe computers
are really expensive and space
consuming.2 If you want a computer
just for regular everyday functions, it is
recommended that you buy a PC. If you
have a business and the available
resources, then a mainframe might be
the right choice for you.
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