unit 2- kietyn2

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UNIT II
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Lesson 1
Parts of a Computer
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MONITOR
A monitor displays information in visual form,
using text and graphics.
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MODEM
A modem is used to connect your computer to the
Internet.
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SYSTEM UNIT
The system unit is the core of a computer system.
Inside this box are many electronic components
that process information.
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MOUSE
A mouse is a small device used to point to and
select items on your computer screen.
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SPEAKER
Speakers are used to play sound. Speakers allow
you to listen to music and hear sound effects
from your computer.
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PRINTER
A printer transfers data from a computer onto
paper. It allows you to print e-mail, cards,
invitations, announcements, and other materials
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KEYBOARD
A keyboard is used mainly for typing text into
your computer. Like the keyboard on a typewriter,
it has keys for letters and numbers.
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• ACTIVITY

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Identify the different parts of the computer.
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Lesson 2
Types of Computer
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Types of computer
Digital Computers
Super Computers
Mini Computers
Micro Computers
Mainframe Computers
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SUPERCOMPUTER

• Super Computers are the fastest types of
  computers which were very expensive and requires
  a lot of mathematical calculations.

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MAINFRAME

• A main frame computer is a very large expensive
  computer system capable of supporting hundreds
  and thousands of users simultaneously, most of
  these computers are found in large organizations
  like universities and hospitals.

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MINICOMPUTER

• These are midsized computers. Mini pc are mainly
  used as departmental computers for data
  processing in large organization or governmental
  institutions like hospitals

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MICROCOMPUTER

• They are mostly found in big and small office,
  they are normally standalone computers known PC,
  or Desktop Computers

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• ACTIVITY

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Fill in the missing letters to find out the
different types of computer.

• M _ N _ Computer
• _ _P _ R Computer
• _ I C _ _ Computer
• M_ _ N _ R _ _E Computer

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