ARIF

2. MY DETAILS
NAMES : Ariful islam
SURNAME : ARIF
GENDER : MALE
Institute :IMB Polytechnic Institute
E-MAIL ADDRESS: ararifulislam19950@gmail.com
FACEBOOK ACCOUNT: Ariful islam

3. WHAT IS A COMPUTER?
A computer is an electronic device that can accept data (input), process the data and produce the
results (output). A computer can calculate and process large amounts of data in a fraction of the
time it would take a normal person to do.

4. HOW COMPUTERS WORK?
INPUT
Keyboard
PROCESSING
CPU
STORAGE
Hard drive
OUTPUT
Printer/screen

5. INPUT
 An input device allows you to communicate with a computer.
 You can use input devices to enter information and issue commands.
 Examples: a keyboard, mouse, and joystick.
KEYBOARD

6. PROCESSING(INSIDE THE COMPUTER’S CASE)
 The Central Processing Unit (CPU) is the main chip in a computer.
 The CPU processes instructions, performs calculation and manages the flow of information
through a computer system.
 The CPU communicates with input, output and storage devices to perform tasks.
CPU

7. STORAGE
 A storage device is used to save information.
 The computer uses stored information, to perform tasks.
 Examples: Hard drive, floppy drive, recordable CD-ROM drive, tape drive and DVD-ROM drive.
HARD DRIVE

8. OUTPUT
 An output device allows a computer to communicate with you.
 These devices display information on a screen, create printed copies or generate sound.
 Examples: Monitor, printer and speakers.
MONITOR