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What Is Computer (Categories of Computer (Mobile devices (Smart Phone,…
What Is Computer
Categories of Computer
Game consoles
Examples : Microsoft Xbox 360, Nintendo’s Wii, Sony’s
Playstation 3
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Mainframe
A large, expensive, powerful computer that can handle
hundreds or thousands of connected users
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Supercomputers
The fastest, most powerful and most expensive computer
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Personal computers
Desktop computers
Categories
Low-end computers : Fine for home users, word processing, simple games, Internet
access
Fully powered computers : Good for heavy use of graphics, programming, or actionoriented
games
Workstations : Very high-end computers used by engineers, financial traders,
and graphic designers
Embedded computers
Automobiles : antilock brakes, airbag controllers, cruise control
Process controllers and robotics : remote monitoring systems, medical devices,
machine controllers
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Component
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Communication
devices
Enables a computer to send and received data, instruction and information to and from one or more computers or mobile devices
Examples : Modem, Router, Hub
Storage
devices
Holds data, instructions, and
information for future use
Example : Hard Disk, CD/DVD ROM, Floppy disk, Memory card, USB Flash drive
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Computer Functions
Information Processing Cycle 