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
It is Fast, Accurate, Versatile, Diligent,
Automatic and High Storage Device.
Mechanical Era (2500yrs ago – 1896)
Electro Mechanical Era (1900 – 1942)
Electronic Era (1946 - 1961)
Modern Era (1961 – Now)
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
Keyboard, Mouse, Printer, Projector, etc. are
Physical parts of Computer that can be
Monitor, Keyboard, Mother Board, Sound
card, Memory, etc.
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.
System Software: Windows OS, Mac,
Utility Software: AVG, Norton, Panda, Quick,
Application Software: MS Word, MS
PowerPoint, Photoshop, freehand mx, etc.