Zusammenfassung der Ressource
Software and
Hardware
components of an
information system
- The difference between
hardware and software
- Hardware
- Something you can touch
- The physical
components of a
system
- Software
- the programmes
used on a computer
- Examples
cannot be things
like microsoft or
word
- Software and
hardware
standardisation
- Incompatibilities
- cost issues
- Limited technical
support
- limited availability means
replacements are hard to
find
- Input, Output and storage
devices
- input devices
- external data being
put into the system
- keyboard
- graphics
tablet
- scanner
- output device
- getting data in the
system out of the
system
- monitor
- plotter
- printer
- storage devices
- devices to hold
data
- hard drive/ external
hard drive
- tape
- memory key
- specialist hardware devices
- Visually impaired
- Braille
keyboard
- Microphone
- Loudspeaker
- Braile printer
- Motor impaired
- Mouth stick
- Puff stick
- Tongue
activated joystick
- Eye-typer
- foot mouse
- Specialist software devices for
physically disabled users
- text to speech
system
- output using a
speech
synthesiser
- visually impaired
- speech to
text system
- inputs
spoken
word
- can be
commands
- Auditory
feedback
system
- plays sound
in response to
user activity
- eg opening windows
- Screen magnifyer
- predictive text
- suggests a
word from a few
letters input
- user does not have
to type whole word
- sticky keys
- system acts as
though key is
held down
- motor impaired
- different types of software
- operating system
- core software
- controls allocation
of resources
- utilities
- assists in monitoring and
maintaining the computer
system
- eg - virus checkers
- user interface
- allows user to interact with application or OS
- GUI
- WIMP
- application software
- programmes that
allow the computer
to solve problems
- eg word processor
- Characteristics of
different user interfaces
- Command line
- Types
intstructions
into a control
box
- uses less memory than
a GUI
- can damage
the system
- only used by expert users
- form
- limited area
on the screen
with boxes to
fill in
- labels to
help the
user
- guide the user
through different
processes
- Dialogue
interface
which asks
questions
- menu
- series of
related items
that can be
selected
- cascaded
- GUI or WIMP
- Context sensitive
- structured
- natural language
- allows the user to
use their own
language to interact
- spoken or written
- voice recognition
- Handwriting