computer is a device that can be instructed to carry out arbitrary sequence of arithmetic or logical operations automatically.

1. PREPARED BY,
HEMA.M.M
PHYSICAL SCIENCE

2. WHAT IS A COMPUTER?

3. A computer is a device that can be instructed to carry
out arbitrary sequences of arithmetic or logical
operations automatically.It is a programmable
machine.The ability of computers to follow generalized
sets of operations,called programs,enables them to
perform an extremely wide range of tasks.

4. INPUT DEVICES
In computing an input device is a piece of computer
hardware equipment used to provide data and control signals
to an information processing system such as a computer or
information appliance.

5. Input devices are
keyboards,mouse,scanners,digital
cameras and joysticks

6. KEYBOARD
Keyboards are a
human interface device which
is represented as a layout of
buttons.

7. MOUSE
A mouse consists
of a ball or laser that
tracks the movement of
the device.

8. JOYSTICK
These devices are
primarily used for
computer gaming.

10. Outputdevices are
Monitors,printers,speakers
and DVD or CD-ROM

11. PRINTERS
A printer is a device that
prints output to a page.

12. SPEAKERS
Speakers are attached
to computers for the output
of sound.

13. DVD or CD- ROM
A DVD or CD-ROM is
a media device on which
the user can write data
and information.