Zusammenfassung der Ressource
Hardware
- Output
- These get
information out of
the computer and
tell the user what is
happening within
the computer
- Printers
- Uses to print text
and images straight
from the computer
- Speakers
- Output sound waves
- Some computers have
built in speakers
- Input
- Input Devices are used to
control the system or
provide it with data so it
can work
- The first computers used
punch cards to input their data
- Pieces of card which
contained holes to represent
binary digits
- Some Examples
- Keyboards
- Concept Keyboards
- These are used in shops
where the user can select
one option from a number
of standard options
- QWERTY Keyboards
- QWERTY Keyboards are
the most common used
- Most common way of
entering information
into a computer
- Ergonomic Keyboards
- The keys are positioned in
a certain way for maximum
comfort
- Reduces risk of RSI -
"repetitive strain
injury"
- Mouse
- Popular way of controlling computer
- Uses sensors to track the position of the
the mouse and this moves the pointer on
the screen
- Touchpad
- Popular way to input on laptops
when mouses may be
inconvenient
- Some people find it
harder to use than a
mouse
- Tracker ball
- Moves mouse by rolling the ball on top
- Reduces RSI
- Graphics Tablet
- Used when controller
needs fine control over
the pointer
- Can be used by graphic
designers, architects and
photo editors
- Scanners
- Barcode scanner
- Used in shops, factories
and manufacturing
industries to read
barcodes
- Flat bed scanner
- Used to scan images
text from printed
documents
- Microphone
- Record sound waves and
convert analogue signals
into digital signals which
can be saved onto a
computer
- Some laptops have microphones built in
- Sensors
- Sensors constantly check
their surroundings for
specific signals
- Some examples
- Light sensors
Proximity Sensors
Pressure sensors
Sound Sensors
Motion Sensors
Temperature
sensors