COMPUTER AND ITS TYPES

1. INTRODUCTION TO COMPUTER

2. GENERATIONS OF COMPUTERS
•First Generation(1940-50):Vacuum Tubes
•Second Generation(1959-63):Transistors
•Third Generation(1964-
Early1970s):Integrated circuits
•Firth Generation(Early1970s-Till
date):Microprocessors
•Fifth Generation(Present and
Beyond):Artificial Intelligence

3. CLASSIFICATION OF COMPUTERS
•Micro Computer
•Mini Computer
•Mainframe computer
•Super computer
•Desktop Computer
•Portable Computer

4. INFORMATION TECHNOLIGY IN
MEDIA
•Print Media
•Electronic Media

5. INFORMATION TECCHNOLOGY IN
EDUCATION
One of the most signification
forces, influencing change in
education in the present century, is
the emergence of highly advanced
communication technologies.

6. INFORMATION TECHNOLOGY IN
PUBLICATION
The development of electronic
publishing is rapidly is rapidly
bringing about change in the
publishing industry and quickly
establishing a presence within the
publishing community.

7. INPUT AND OUTPUT DEVICES
INTRODUCTION
A computer is a system that
collects, processes, outputs, and
stores information. Computers can
be useless if they do not provide
interaction with user.

8. INPUT DEVICES
•Keyboard
•Mouse
•Modem
•Joystick
•Digitizing pen
•Tablet
•Microphone
•Touch screens
•Scanner
•Camera

9. OUTPUT DEVICE
•Sound card
•Speakers
•Monitor
•Printers
•Plotter

10. OPERATING SYSTEM
INTRODUCTION
A operating system is a layer of
software which takes care of technical
aspects of a computer’s operation.

11. EVOLUTION OF OPARETING
SYSTEM
In the early 1960s, commercial computer
vendors were supplying quite extensive
tools for streamlining the development,
scheduling, and execution of jobson batch
processing system.
In early computer there were no
Operating Systems.

12. TYPE OF OPERATING SYSTEM
Real-time operating system (RTOS)
Single-user, single task
Single-user, multi-tasking
Multi-user
Multi-processing
Embedded systems

13. FUNCTION OF OPARETING
SYSTEM
Processer
Memory management
Device management
Storage and File management
Security
User interface

14. PROCESSOR MANAGEMENT
Processor management works
by allotting equally, the processor’s
computing abilities among the
processes that run under the OS
according to their order of priority.

15. COMPUTER SOFTWARE
INTRODUCTION
A computer needs to be
instructed to perform any task. These
instructions are given in the form of
computer programs which are
written in computer programming
languages.

16. SOFTWARE
Software can be defined as the set of
programs; routines, and symbolic languages
that control the functioning of the hardware
and direct its operation.

17. CATEGORIES OF SOFTWARE
Computer software consists of several
programs, which are directly responsible for
controlling, integrating, and managing the
individual hardware computers of a
computer system.

18. SYSTEM SOFTWARE
System software consists of
several programs, which are directly
responsible for controlling, integrating,
and managing the individual hardware
components of a computer system.

19. PROGRAMMING SOFTWARE
Compilers
Debuggers
Interpreters
Text editors

20. APPLICATION SOFRWARE
Word-processing software
Spreadsheet software
Database software
Desktop software
Office suite software
Image Editors
Communication software
Utility software
Educational software

21. CLASSIFICATION OF
PROGRAMMING LANGUADES
Machine Language
Assembly Language
High-level Language

22. GENERATION OF
PROGRAMMING LANGUAGES
•First Generation: Machine Language
•Second Generation: Assembly
Language
•Third Generation: High-level Language

23. MODULATION TECHNIQUES
•Amplitude Modulation
•Frequency Modulation
•Phase Modulation

24. NETWORK TOPOLOGY
Bus topology
Ring topology
Star topology
Tree topology
Mash topology