Classification of Computer Difference b/w Professional & User Computer Difference b/w Computer literate & Computer competent

1. Lecture no : 4
Introduction to Computer/ Computer
Education
Mr. Muhammad Moazzam
MPhil Public Health
BSc BioMedical
University of the Lahore

2. Contents
• Generations of Computer
• Difference b/w Professional & User Computer
• Difference b/w Computer literate &
Computer competent

3. Classification of computer
Computers comes in many different sizes and
ranges of power. They are different types of
computer system have varying capabilities.
Today’s computer systems are classified into
following categories:
• Super computer
• Mainframe computer
• Mini computer
• Micro computer

4. Supercomputer
• A computer that was the fastest in the world at the
time it was constructed
• The most powerful computers in terms of
performance and data processing are the
Supercomputers
• These are specialized and task specific computers
used by large organizations
• These computers are used for research and
exploration purposes, like NASA uses
supercomputers for launching space shuttles,
controlling them and for space exploration
purpose

5. Supercomputer
• Can tackle tasks that would not be practical for
other computers.
– Typical uses
• Breaking codes
• Modeling weather systems
• highly complex problems that require extreme calculation
power
• The supercomputers are very expensive and very
large in size. It can be accommodated in large air-
conditioned rooms; some super computers can
span an entire building.

6. NASA supercomputer

7. Uses of Supercomputer
• Earthquake Studies:
Supercomputers are used to study the
Earthquakes phenomenon. Besides that
supercomputers are used for natural resources
exploration, like natural gas, petroleum, coal,
etc.

8. Earthquake Studies

9. Uses of Supercomputer
• Weather Forecasting:
Supercomputers are used for weather
forecasting, and to study the nature and extent of
Hurricanes, Rainfalls, windstorms, etc.

10. Weather Forecasting

11. Uses of Supercomputer
• Nuclear Weapons Testing:
Supercomputers are used to run weapon
simulation that can test the Range, accuracy &
impact of Nuclear weapons.

12. Nuclear Weapons Testing

13. Mainframe
• Large expensive computer
capable of simultaneously
processing data for
hundreds or thousands of
users.
• Used to store, manage,
and process large amounts
of data that need to be
reliable, secure, and
centralized.

14. Mainframe computers
• Mainframe computers are used in large
organizations like banks and insurance
companies where many people need frequent
access to the same data at the same time.

15. Mini computer
• Mini computers are lower to mainframe
computers in terms of speed and storage
capacity
• They are also less expensive than mainframe
computers
• Some of the features of mainframes will not be
available in mini computers. Hence, their
performance also will be less than that of
mainframes

16. Mini computer

17. Microcomputer
• The invention of microprocessor (single chip
CPU) gave birth to the much cheaper micro
computers. They are further classified into
• Personal Computers
• Laptop Computers
• Handheld Computers(PDAs)

18. Personal Computers
They are usually easier to use and more
affordable. They are normally intended for
individual users for their word processing and
other small application Requirements:
• Desktop
• Tower

19. Personal Computers

20. Laptop Computers
• Laptop computers are portable computers.
• They are lightweight computers with a thin
screen. They are also called as notebook
computers because of their small size.
• They can operate on batteries and hence are
very popular with travellers. The screen folds
down onto the keyboard when not in use

21. Laptop Computers

22. Handheld Computers(PDAs)
• Handheld computers or Personal Digital
Assistants (PDAs) are pen-based and also
battery- powered. They are small and can be
carried anywhere. They have touch screens
which we use with a finger or a stylus.
• They are used for scheduling appointments,
storing addresses and playing games.

23. Handheld Computers(PDAs)

24. Difference b/w Professional &
User Computer
Professional Computer :
 Someone who is an
expert in the field of
computer science.
 A person with an
advanced degree in
computer science &
computer engineering
User computer :-
 A person who uses
computers for work or
entertainment or
communication or
business.
 Computer user dose
not advanced degree
in computer science &
computer engineering.

25. Difference b/w Professional &
User Computer
 The computer
professional is
the one who
made the
software’s
applications, etc.
 Some examples: A
software engineer
working in
Microsoft is a
computer
professional.
Professional User Computer :-
computer :-
 The computer user
is the one who uses
the things produced
by the computer
professional.
 Some example: A
computer user
using the
applications like
MS office;
computer games
etc.

26. Difference b/w Computer literate
& Computer competent
 Computer literacy means
the knowledge of
computing ideas and
terms and the ability to
perform basic tasks using
the computer .
 The computer
literate understand
the basics of
computer operations:
Computer literate :- Computer Competent :-
 Computer competent perform
simple tasks with a computer.
Email, research, interaction with
others via the internet.
 It requires some definite
level of expertise on one or
more aspect of computer &
dose not understand
computer operations.

27. Difference b/w Computer
literate & Computer
competent
For Example: -
Turn on
power; use a
keyboard; run
an application; send
an email, surf the
web, etc.
• For Example: -
Email, research,
interaction with others
via the internet.
Creating and editing
documents,
spreadsheets and
maybe a slideshow
(PowerPoint).