Peripheral devices are external hardware devices attached to a computer. Input devices receive signals or data into the system, such as keyboards, mice, webcams, barcode readers, image scanners, and touch screens. Output devices send signals or data from the computer, including display devices like computer monitors, LCD projectors, and printers. The document provides details on common input devices like keyboards, mice, webcams, barcode readers, image scanners, and touch screens. It also describes output devices such as display devices, computer monitors, and LCD projectors.

1. Made by :
Mehak
Singhal 6-c

2. Peripheral devices
External hardware
devices attached to the
computer are called
peripheral devices.

3. Input
devices
Output
devices

4. Input devices
The signals or
data received
by the system
is called input
devices.
• Keyboard
• Mouse
• Webcam
• Barcode
• reader
• Image scanner
• Touch screen

5. Input devices
keyboard
• In computing , a keyboard is
a typewriter-style device ,
which uses an arrangement
of buttons or keys , to act as
mechanical levers or
electronic switches.
mouse
• In computing, a mouse is
a pointing device that
functions by detecting two-
dimensional motion relative
to its supporting surface.

6. Input devices
webcam
• A webcam is a video
camera that feeds its image in
real time to
a computer or computer
network. Unlike an IP
camera (which uses a direct
connection
using Ethernet or Wi-Fi), a
webcam is generally
connected by
a USB cable, FireWire cable, or
similar cable.
Touch screen
• Touch screen A touch
screen is an electronic
visual display that the user
can control through simple
or multi-touch gestures by
touching the screen with
one or more fingers. Some
touch screens can also
detect objects such as
a stylus or ordinary or
specially coated gloves.

7. Input devices
Image scanner
• Image scanner In computing,
an image scanner—often
abbreviated to just scanner—is a
device that optically scans
images, printed text, handwriting,
or an object, and converts it to
a digital image.
Barcode reader
• A barcode reader (or barcode
scanner) is an electronic device
for reading printed barcodes. Like
a flatbed scanner, it consists of a
light source, a lens and a light
sensor translating optical
impulses into electrical ones.

8. Output devices
• Display
device
• Computer
display
• LCD
projector
• printer
The signals
or data sent
from
computer is
called output
devices.

9. OUTPUT DEVICES
DISPLAY DEVICE
• A display device is
an output device for
presentation
of information in visual[1]or t
actile form (the latter used
for example in tactile
electronic displays for blind
people).
COMPUTER DISPLAY
• Computer display
A monitor or a display is
an electronic visual
display for computers. The
monitor comprises the
display device, circuitry and
an enclosure

10. Output devices