2. What is computer ?
Computer an electronic device
which takes the data input
,from the user than processes it
and gives the meaningful
information as a output.
Computer is fader charts
Babbage .
3. input device
In put dives –any machine that feeds data, into a computer for
example a keyboard, is an in put devoirs when you type tart in
keyboard, it show on display monitor is an output device
Examples
Joystick
Digital camera
Game pad
Remote
Keyboard
Mouse
Microphone
Scanner
4. Output
When the computer takes the data input from the use of tar that profess it and
gives related in formation output.
Examples
Monitor
Prater
Speaker
Head phones
Projector
5. Features of computer
Stage-computer can stage large amount of data
Speed-it can perform complex, catcall on saving less
team.
Accuracy-performs operation with expect result.
Versatility-it can work for a long period of time
without getting tired.
6. Generation Year Machines
First generation 1946 to 1955 Vacuum tubes
Second generation 1955 to 1965 Trans is tars
Third generation 1965 to 1975 Ice integrated
circuits
Forth generation 1975 to present Present micro
proassou
Fifth generation Present artificial
