1. NAME - Mudit khandelwal
Class – IX ‘A’
Title of the project – Component of computer
Submitted to – Ramesh sir
Submitted on –
25/6/2013

3. ☺ IT IS THE BRAIN OF THE COMPUTER
☻ Its FULL FORM IS CENTRAL
PROCESSING UNIT
☺, the CPU is the most important
element of a computer system
☻ Modern CPUs are small and
square and contain multiple
metallic connectors or pins on the
underside.
☺ The CPU is inserted directly into a CPU
socket, pin side down, on the
motherboard.
☻On large machines, the CPU requires
one or more printed circuit boards
☺ Modern CPUs also have an attached
heat sink and small fan that go directly on
top of the CPU to help dissipate heat.

4. ♥ A keyboard is the set of typewriter-like
keys that enables you to enter data into a
computer
♦ Computer keyboards are similar to
electric-typewriter keyboards but contain
additional key
♥ The keys on computer keyboards are
often classified as follows:
alphanumeric keys -- letters and numbers
punctuation keys -- comma, period,
semicolon, and so on. special keys -function keys, control keys, arrow keys,
Caps Lock key, and so on.
♦ There are 104 keys on a standard US
keyboard that works with Microsoft
Windows products

5. ♣ A device that controls the movement of
the cursor or pointer on a display screen
♠ Invented by Douglas Engelbart of
Stanford Research Center in 1963, and
pioneered by Xerox in the 1970s
♣ Empowers underserved youth to learn,
lead and create with technology,
preparing them
with skills essential for their academic and
career success.
♠ the first multi touch mouse is
discovered by apple company
♣ On most computers, the user can
move the mouse to move the cursor in
the same direction.

6. • A monitor or a display is an electronic visual
display for computers.
◘ The monitor comprises the display
device, circuitry and an enclosure.
• The display device in modern monitors is
typically a thin film transistor liquid crystal
display (TFT-LCD) thin panel, while older
monitors use a cathode ray tube (CRT) about
as deep as the screen size.
◘ Originally, computer monitors were
used for data processing while television
receivers were used for entertainment.
• From the 1980s onwards, computers (and their monitors) have been used for both
data processing and entertainment, while televisions have implemented some
computer functionality. The common aspect ratio of televisions, and then computer
monitors, has also changed from 4:3 to 16:9 (and 16:10).

7. ~ In computing, a printer is
a peripheral which produces a
representation of an electronic document
on physical media such as paper or
transparency film.
`Printers are one of the most used
peripherals on computers and are
commonly used to print text, images, and
photos.
Types of printers
All-in-one (AIO) printer
Dot Matrix printer
Inkjet printer
Laser printer
Multifunction printer (MFP)
Thermal printer
LED printer

8. ☻ A light pen is a computer input device in the
form of a light-sensitive wand used in
conjunction with a computer's CRT display.
☻It allows the user to point to displayed
objects or draw on the screen in a similar
way to a touchscreen but with greater
positional accuracy.
☻It was long thought that a light pen can
work with any CRT-based display, but not
with LCDs (though Toshiba and Hitachi
displayed a similar idea at the "Display
2006" show in Japan[1]) and other display
technologies.

9. ♥ A trackball is a pointing
device consisting of a ball held by a socket
containing sensors to detect a rotation of
the ball about two axes—like an upsidedown mouse with an exposed protruding
ball.
♥ “Logitech M570 wireless track ball” is
the trackball with mouse attached .
♥ The user rolls the ball with
the thumb, fingers, or the palm of
the hand to move a pointer.
♥ A trackball has no limits on effective
travel; at times, a mouse can reach an edge
of its working area while the operator still
wishes to move the screen pointer farther.