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  6:04 PM | 4 Cloud(s) Science Computer Notes
WHAT IS A COMPUTER
An
electronic device (machine),
that performs four basic operations: input, processing, output and storage.
Types of Computer :
* Supercomputers
* Mainframes
* Personal Computers
* Mobile Computer and Devices
* Embedded Computers
---------------------
What
is Supercomputer ?
•A
supercomputer is the fastest, most powerful, most expensive computer
and
used
for very complex,
sophisticated job such as nuclear research, calculating
weather patterns, petroleum exploration, online banking, automotive design.
Physical
Size : Full
room of equipment
Speed
:
•The
fastest supercomputer are capable of processing billions of program
instructions per second.
•Can
operate at speeds measured in picoseconds-1,000 times as fast as
microcomputers.
Storage
:
•Can store more than 20,000 times the data
and information of an average desktop computer.
What
is Mainframe ?
•A
mainframe is a large, expensive, powerful computer that can handle hundreds or
thousands of connected users simultaneously (multi-user) and storing tremendous amounts of data, instructions and information.
•Mainframes
are often used in businesses that manage large amounts of data, for example,
insurance companies use mainframes to process information about millions of
policyholders.
Physical
Size : Partial
room to a full room of equipment
Speed
:
•Powerful
computer that handle hundreds or thousands of connected users simultaneously at
the same time.
Storage
:
•Can store tremendous amounts of data,
instructions, and information;
What
is Personal Computers ?
•Personal
computer is a computer
that can perform all its input, processing, output and storage activities by
itself.
Physical
Size : Fits
on a desk.
Speed
: Various depends on the memory and
processors.
Storage
: Various depends on the hard drive size
Mobile computer is a personal computer that can perform all of its input, processing, output and storage activities by itself that you can carry from place to place.
Physical
Size : Fits
on the lap, palm, pocket
Speed
: May slower than a personal computer
Storage
: Small storage media
What is Embedded Computer ? •Special-purpose computer that functions as a component in a larger product and perform various functions depending on the product. Physical Size : Small 
Speed
: May slower than a mobile computer and devices.
Storage
: Limited or small storage media.
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ANIS DALILA BT ADNAN 
4 Comments:
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