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Introdution To Computing Lecture 1
Intoduction To Computing
Computer :
Computer
is an electronic device which is designed to work with information. The word
computer is derived from word ‘computare’ means to calculate.
Computer
was first discovered in 1822 by Charles Babage. He is called the Grand Father
of computer. In 1991 it came in the shape of P4.
Input (Data) :
Input is the raw information entered into a computer from the
input devices. It is the collection of letters, numbers, images etc.
Process :
Process is the operation of data as per given instruction. It is
totally internal process of the computer system.
Output :
Output is the processed data given by computer after data
processing. Output is also called as Result. We can save these results in the storage
devices for the future use.
CPU :
Everything computer does is controlled by its Central Processing
Unit. It is called the brain of computer. The CPU is where most calciulations
take place.
Input Devices :
1.
Keyboard
2.
Mouse
3.
Joystick
4.
Track Ball
5.
Touch Pad
6.
Light Pen
7.
Scanner
8.
Webcam
9.
Microphone
Output :
1.
Monitor
2.
Printer
3.
Projector
4.
Speaker
5.
Plotter
Hardware :
All the physical devices that constitutes of a computer system are
called hardware. It is a term refer to any part of computer to which we can
easily touch. It also consists of inter collected devices which controls the
computer operations like input, output, storing and communication. It is
concluded that hardware means actual machine and its components. All types of
hardware devices attached to computer are hardware.
Types Of Hardware:
1.
Input hardware ( Keyboard, Mouse, Scanner etc )
2.
Output Hardware ( Monitor, Printer etc )
3.
Storage Hardware ( RAM, Hard Disk etc )
4.
Communication Hardware ( Modem, Router etc )
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