presentation on types of computers

1. Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.McGraw-Hill Technology Education
Types of Computers
Prepared by: Junaid Iqbal

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The Computer Defined
• Electronic device
• Converts data into information
• Modern computers are digital
– Two digits combine to make data
– Bit/Nibble/Byte/Word etc
– ASCII /Uni Code
• Older computers were analog
– A range of values made data

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Computers For Individual Use
• Desktop computers
– The most common type of computer that
you see in homes, schools, and in most
businesses
– They are small enough to be placed on a
desk or table but are too big to be carried
around
– Performs a variety of tasks

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Computers For Individual Use
• Notebook computers
– Small portable computers
– Weighs between 3 and 8 pounds
– About 8 ½ by 11 inches
– Typically as powerful as a desktop
– easy to carry around

5. Computers for Individual Use
• Laptop Computers
 A laptop is a small, portable computer
–
 Nowadays, laptop computers are more
frequently called notebook computers,
though technically laptops are
somewhat larger in size than notebooks,
in both thickness and weight.
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Computers For Individual Use
• Tablet computers
– Newest development
in portable
computers
– Input is through
a pen
– Run specialized
versions of office
products

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• Handheld computers
– Very small computers
– Personal Digital Assistants (PDA)
– Note taking or contact management
– Data can synchronize with a desktop
Computers For Individual Use

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Computers For Organizations
• Network servers
– Centralized computer
– All other computers connect
– Provides access to network resources
– Multiple servers are called server farms
– Often simply a powerful desktop

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Computers For Organizations
• Mainframes
– Used in large
organizations
– Users access
through a terminal
– multi tasking
capability and
high data storage.

10. Cont….
• They are mostly used
by banks and
Insurance companies.
• These computers have
specialized wiring
system and usually
occupies a big room
with temperature
control.
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Computers For Organizations
• Minicomputers
– Called midrange computers
– The size of mini computers may be as a
washing machine
– Handle hundreds of users
– Used in smaller organizations for specific
purposes
– Users access through a terminal

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Computers For Organizations
• Super computers
– The most powerful computers
made, expensive but fastest
– Handle large and complex
calculations
– Process trillions of operations
per second
– Found in research
organizations
– Users : NASA & US
Government

13. References
• Introduction to computer by IT Series
• https://en.wikiversity.org/wiki/Types_of
_computers
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