Unit A: Computer and Internet
Basics
1
COMPUTER CONCEPTS
Categorizing Computers
2
 Which type of computer is right for me?
 A personal computer is designed to meet the computing needs
of an individual for home, school, or small business use.
Personal
 Personal Computers include:
Computer
Desktop
Computer
Portable
Computers
Vertical
Tablet
Horizontal
Netbook
Laptop
Categorizing Computers
3
 If I get a desktop computer, will it fit on my desk?
 Yes, that is why it is called desktop Computers.
 A desktop computer’s system unit can be housed in a vertical
case or a horizontal case.
 Horizontal case placed under the display on the desk.
 Vertical case can be placed on the desk, on the floor, or in
cubbyhole beneth the desk.
Categorizing Computers
4
 What if I need to use my computer in different
locations?

You need to consider portable computer.
Notebook Computers
 Tablet Computers
 Netbooks
 Handheld computers

Categorizing Computers
5
 What are the advantages of a notebook computer?
 Notebook computers have a clamshell design, they open and
close in a hinge.
 Small
 Notebook computers generally cost more than
desktop computers.
Categorizing Computers
6
 Why should I consider a tablet commputer?
 It is a portable computer that features a touch sensitive screen,
which can be used as a writing or a drawing pad.
 Useful for people who use their computers while on the go.
Categorizing Computers
7
 What is a netbook?
 Are mini laptops.
 Seven or eight inches wide and weigh about 2 bounds.
Categorizing Computers
8
 What if I just need a small portable computer that
fits in a purse or poket?


Use handheld computer.
It is personal Digital Assistant (PDA) enhanced with features
such as removable storage, email, web access, voice
communications, built-in camera, and GPS.
Categorizing Computers
9
 What are some other categories of computers I
should know about?
Workstations
Mainframe
Supercomputer
• Powerful desktop computers designed for specialized tasks that
require a lot of processing speed.
• Medical imaging, full-motion video graphics, computer-aided design.
• Large and expensive computer capable of simultaneously processing
data for hundreds or thousand of users.
• Businesses, universities, governments
• One of the fastest computers in the world.
• It can tackle tasks that would not be practical for other computers
such as breaking codes and modeling.
Categorizing Computers
10
 What does it mean when I hear, “the server is
down?” Is a server another type of computer?

Server has several meanings:
Computer hardware,
 Spacific type of software
 Combination of hardware and software


The purpose of a server is to serve computers on a netwrok by
supplying them with data.