Jst Beginning With /this

2. Computer is an electronic device that can
accept data, process it and give result.
Computer stands for “Commonly Operated
Machine Particularly Used for Trade Education
and Research”
 It is Fast, Accurate, Versatile, Diligent,
Automatic and High Storage Device.

3.  Mechanical Era (2500yrs ago – 1896)
 Electro Mechanical Era (1900 – 1942)
 Electronic Era (1946 - 1961)
 Modern Era (1961 – Now)

4.  Super Computer
 Mainframe Computer
 Mini Computer
 Micro Computer

5.  Analogue Computer
 Digital Computer
 Hybrid Computer

6.  IBM PC
 IBM Compatibles
 Apple/Macintosh

7.  A system of one or more Computers and
associated software with common storage.
 Computer Hardware that is added to a
Computer in order to expand its abilities are
Computer Peripherals.
 Keyboard, Mouse, Printer, Projector, etc. are
Computer Peripherals.

8.  Physical parts of Computer that can be
touched.
 Monitor, Keyboard, Mother Board, Sound
card, Memory, etc.


9.  A set of programs, procedures, functions,
associated data or its Documentation.
 It is Untouchable.
 It exists as ideas, application, concepts, and
symbols but it has no physical substance.

10.  System Software: Windows OS, Mac,
Linux, etc.
 Utility Software: AVG, Norton, Panda, Quick,
etc.
 Application Software: MS Word, MS
PowerPoint, Photoshop, freehand mx, etc.

11. For Watching & Listening