What is Computer?
Computer is an electronic machine. We can enter data after some processing gives output.
Who is the father of Computer?
Charles Babbage in 1946.
What is the full form of Computer?
C - Common
O - Operating
M - Machine
P - Particularly
U - Used for
T - Technical / Trade
E - Education
R - Research
What is the full form of C.P.U. ?
Central Processing Unit.
Main parts of Computer?
Monitor
Keyboard
CPU
Mouse
Input Device = Keyboard , Mouse
Output Devices = Monitor , Printer , Speaker.
How many keys are there in a keyboard ?
In keyboard Present keys 104 keys.
1. Function Keys = f1 - f12
2. Number Keys = 0-9
3. Alphabetic Key = A-Z
4. Arrow Key =
5. Arithmetic Key = +,-,*,#
6. Special Key = alt , ctrl , shift
In Monitor first screen = Desktop , Icons , Taskbar , Start bar.
What is Desktop ?
The first screen of the window is called Desktop.
What is icons ?
The small picture on desktop is called icons.
What is Mouse ?
A hand-controlled electromechanical device for interacting with a digital computer. The mouse can be moved around on a flat surface to control the movement of a cursor on the computer display screen.
It has three buttons
a) Left click = Selection.
b) Right click = Pop-up menu
c) Scroll bar = Page up/down
Shortcut keys for computer shut down = alt+f4.
