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Type of Computer

Description and example

Advantages

Disadvantages

Examples of people who use them….

Main Frame

Mainframe computers referred to as "big iron".

A Data Processor

Mainframes

run multiple sessions, and with high reliability. Companies can run their IT

operations for years without problems or interruptions with minimum down

time.

Mainframes occupies lot of space and produce lot of heat. If it get

hacked you will lose a lot of software and storage.

Microsoft, Government and Apple

(Big Company’s)

Desktop or personal computer

Home Not used for portable facilities

Popular with households

Easy to use…

More storage…Software etc..

Run slow, If filled with lots of data. Attractive to Thief’s…Not a

lot of Ram/battery

Average person

Laptop or notebook

Portable Computer

Small and Compact. Light weight

Upgrade ability of laptops is very

limited compared to desktops

Students

Netbook

Small Laptop

Great for written/Homework

It Can’t hold a lot of data compared to

desktops

Student or

someone that is always on the go…

Personal Digital assistants (PDA)

PDA is a handheld

device that combines computing, telephone/fax, Internet and networking

features.

Small Portable device which is easy to maintain and use.

Doesn’t contain much Data and You can’t access some features like you

could on a desktop PC

Teenagers, Business People…Etc….

Smart Phones

A Phone that allows you to Download Apps and Access the Internet

You can chat with your

friends without having msn on your PC at work

Easy to Break, Easy to lose…and expensive to cover damage.

Teenagers, Business men and women…

Possibly children

Unit 1 Lesson 1

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