When you press a
key (1), its switch
completes a certain
electrical circuit (2).
A processor (like a
tiny computer)
inside the keyboard
records which
circuits were
completed and in
what order. Then it
sends that
information to your
computer.
chip
and
pin
device
A chip embedded into
your debit or credit
card is at the heart of
Chip & PIN. Chip
technology uses
sophisticated
processing to identify
genuine cards and
makes counterfeiting
more complex and
expensive
mouse
you drag it round and it shows it on the screen
Xbox one
x box one controlar works by playing a game preesing buttons so it shows on the monerter
microphone
so speak
scaner .
The light passes through the scanner lens
and reaches the CCD sensors.
camera
. A camera basically consists of a
lightproof box that lets in a bit of light
at just the right moment. Once the
light enters the camera, it creates an
image by causing a chemical reaction
on photo film.
bar code reader
reads things from the shop
optical pen
use the laser to guide the mouse
joystick
so it can be used for a game
output
monerter
shows images on the computer screen so you can see what's happaning
speakers
it gets info from the
disk and sends it to
the speaker so it starts
playing the loud music
headphones
plug it it to your device and lisen to it
laser printer
it scans the item on the screen making it three D
web camera
where if you pressa button it will take a picture
DvD player
playing a movie through the monerter like toy story
projecter
shows things on the screen at the movies from the projecter
ploter
plotters draw line art onto the
surface of the paper to reproduce
vector graphics drawn on a
computer.
printer
it has a light scaning back and forth making a pattern
storage devices
USB
stores data from DVD, music and games
DvD
it has a mount of storage so it plays on the DVD player
Sim card
gives you your phone number and a bit more storage