GROUP 2

PARTS OF COMPUTER
INPUT AND OUTPUT
DEVICES
INPUT DEVICE
An input device is a piece of
equipment used to provide data and
control signals to an information
processing system, such as a
computer or information appliance.
 EXAMPLES OF
INPUT DEVICES
KEYBOARD
Keyboard is the most common and very
popular input device which helps to input
data to the computer. The layout of the
keyboard is like that of traditional
typewriter, although there are some
additional keys provided for performing
additional functions
 KEYS AND
DESCRIPTIONS
Typing Keys
These keys include the letter keys
(A-Z) and digit keys
(0-9) which generally give the same
layout as that of typewriters.
Numeric Keypad
It is used to enter the numeric data or
cursor movement. Generally, it consists of
a set of 17 keys that are laid out in the
same configuration used by most adding
machines and calculators.
Function Keys
The twelve function keys are present on
the keyboard which are arranged in a row
at the top of the keyboard. Each function
key has a unique meaning and is used for
some specific purpose.
F1 – Opens the Help screen for almost every program.

F2 – Allows you to rename a selected file or folder.

F3 – Opens a search feature for an application that is active at the

moment.

F4 – Alt + F4 closes the active window.

F5 – Allows you to refresh or reload the page or document window.

F6 – Moves the cursor to the address bar in most Internet browsers.

F7 – Used to spell check and grammar check a document in
Microsoft Apps (e.g. Word).

 F8 – Used to access the boot menu in Windows when turning on the
ccomputer

 F9 – Refreshes a document in Microsoft Word and sends and receives emails in
Outlook.

 F10 – Activates the menu bar of an open application. Shift + F10 is the same as
right clicking.

 F11 – Enters and exits full screen mode in Internet browsers.

 F12 – Opens the Save As dialog box in Microsoft Word.

Control Keys
These keys provide cursor and screen
control. It includes four directional
arrow keys. Control keys also include
Home, End, Insert, Delete, Page Up,
Page Down, Control(Ctrl),
Alternate(Alt), Escape(Esc).
Directional Keys
The arrow keys or directional keys are used in
many applications to do different things such as:
•Moving text cursor to the right, left, previous line
and next line

•Moving player's character in video games

•Scrolling down and up in different documents and

web pages
•Changing the current selected item in a list or
selecting file icon near to the current selected file in
a file explorer

•Moving selected object in a drawing software

•Moving forward and backward while

playing multimedia files
Special Purpose Keys
Keyboard also contains some
special purpose keys such as
Enter, Shift, Caps Lock, Num
Lock, Space bar, Tab, and Print
Screen.
MOUSE
A computer mouse is a hand-held pointing device
that detects two-dimensional motion relative to a
surface. This motion is typically translated into
the motion of a pointer on a display, which
allows a smooth control of the graphical user
interface of a computer.
MICROPHONE
The function of a microphone in a computer is
to pick up sound, just like a microphone used
by a singer on stage, and convert the audio
sound waves into electrical signals. From there,
these electrical signals travel to the sound card,
where they are converted into digital signals,
able to be processed by the computer.
SCANNER
A scanner is a device that captures images from
photographic prints, posters, magazine pages and
similar sources for computer editing and display.
Scanners work by converting the image on the
document into digital information that can be stored
on a computer through optical character recognition
(OCR).
 Joystick
A joystick is an input device that can
be used for controlling the movement
of the cursor or a pointer in a
computer device. The pointer/cursor
movement is controlled by
maneuvering a lever on the joystick.
The input device is mostly used for
gaming applications and, sometimes,
in graphics applications.
OUTPUT DEVICE
An output device is any piece of
computer hardware equipment
which converts information into a
human-perceptible form or,
historically, into a physical
machine-readable form for use
with other non-computerized
equipment.
It can be text, graphics, tactile, audio, or
video.
Examples include monitors, printers,
speakers, headphones, projectors, GPS
devices, optical mark readers, and braille
readers.
 EXAMPLES OF
OUTPUT DEVICES
MONITOR
A computer monitor is an output device that
displays information in pictorial or text form.
A monitor usually comprises a visual display,
some circuitry, a casing, and a power supply.
HEADPHONES
Headphones let a single user listen to an audio
source privately, in contrast to a loudspeaker,
which emits sound into the open air for anyone
nearby to hear. Headphones are also known as
earspeakers, earphones or, colloquially, cans.
PRINTER
A printer is a device that accepts text and
graphic output from a computer and
transfers the information to paper,
usually to legal-size, 8.5" by 13" sheets
of paper.
SPEAKER
A computer speaker is an output hardware
device that connects to a computer to
generate sound. The signal used to produce
the sound that comes from a computer
speaker is created by the computer’s sound
card.
PARTS OF A LAPTOP
A webcam is a digital video
device commonly built into a
computer. Its main function is to
transmit pictures over the
Internet. It is popularly used with
instant messaging services and
for recording images.

The top panel

provides installation
place and support for
laptop screen.
A computer keyboard is
an input device used to
enter characters and
functions into the
computer system by
pressing buttons, or
keys.
The base panel is one of the
lesser-known laptop part
names. This laptop
component houses the
essential parts of the
computer. Everything
from the CPU to the hard
drive and the wireless
card is located in the base
panel. This part of a
laptop protects those
components and holds
them connected together.
An optical disc drive (ODD) in
a computer system allows
you to use CDs, DVDs, and
Blu-ray discs to listen to
music or watch a movie.
Most drives also allow you
to write data to a disc, so
you can create your own
music CDs, video DVDs or
even create of back-up
copy of your important data
files.
The touchpad on a laptop
does the same job as the
mouse on a desktop
computer. It is
sometimes also called a
trackpad. The touchpad
is used to control the
mouse pointer, also
known as the cursor. The
cursor is used to point at
and choose (or activate)
items on the screen.
Display screen
It functions similar
to monitor used
in desktop PC. It
is known as
output device as
it is used to
display output to
the user in
desired format.
The charger is also one of the
important parts of a laptop
computer. You can also call the
charger a power cable. Your
laptop’s battery is charged from
the charger itself so that after the
power cut, the laptop runs from
the battery. You know that the
charger or power cable is the
same, which works both such as
the battery of the laptop is also
charged and also gives the current
to run the laptop from the line.
External ports are
also important
parts of laptop
computers. You
must have seen
that there are
many ports in the
base panel of the
laptop, which are
used to connect
many types of
devices.
Given below are the names of some external
ports which are in laptop computers.
USB Port
VGA port
Mic Port
Ethernet Cable port
Headphone Jack Port
Inside Parts of a Laptop
The motherboard is the
backbone that ties the
computer's components
together at one spot and
allows them to talk to
each other. Without it,
none of the computer
pieces, such as the CPU,
GPU, or hard drive, could
interact.
A computer hard drive (or a hard
disk or HDD) is one kind of
technology that stores the
operating system, applications,
and data files such a documents,
pictures and music that your
computer uses. The rest of the
components in your computer
work together to show you the
applications and files stored on
your hard drive.
A battery is a hardware
component that supplies
power to a device,
enabling that device to
work without a power
cord. Batteries are often
capable of powering a
laptop computer for
several hours depending
on how much power it
requires.
At the heart of every
laptop (or desktop)
computer is a central
processing unit (CPU),
commonly called a
processor or just,
generically, a chip,
that's responsible for
nearly everything that
goes on inside. The
CPUs you'll find in
current laptops are
made by AMD, Intel,
Apple, and Qualcomm.
RAM is a form of
temporary
computer storage
that allows stored
data to be
received and read
almost
instantaneously.
SPEAKER
A laptop speaker is an
output hardware
device that connects
to a computer to
generate sound.
An SSD, or solid-state
drive, is a type of
storage device
used in computers.
This non-volatile
storage media
stores persistent
data on solid-state
flash memory.
ROM (read-only memory)
is a non-volatile
memory type. This
means it receives data
and permanently writes
it on a chip, and it lasts
even after you turn off
your laptop.
A wireless card is one of the
important components of a
laptop. The wireless card is
also located in the base panel
of the laptop. By taking a
wireless card, you can run the
internet on your laptop
without an Ethernet cable.
Without a wireless card, you
cannot run wireless internet
on your laptop.
The video card is also an
important part of a laptop
computer. You can also call video
cards a graphics card. GPU
stands for Graphics Processing
Unit. The video card enhances the
video quality of the laptop. If you
see the photo of a video on your
laptop using a video card, then
the video or photo will look
colorful. And if you watch the
same video or image on your
laptop without graphics, then you
will not see that video or image in
colorful.
Laptop cooling pads have
fans in them which help
flow cool air keeping your
laptop cool all time.
Cooler temperature will
help cool the laptop from
the bottom, reducing the
temperature of the
components.acts as a
cooling agent to prevent a
device from reaching a
harmful heat level.
 MODERN
COMPUTER SETUP
 Thanks!
THIS CONCLUDES GROU
P2
OUR REPORT FOR
TODAY.

THANK YOU!
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