Specialist Hardware and Software Devices for
Disabled People
Descrição
A level ICT (3.1.2 Software + Hardware components of information systems) Mapa Mental sobre Specialist Hardware and Software Devices for
Disabled People, criado por charcrawford em 21-11-2013.
Specialist Hardware and Software
Devices for Disabled People
Puff suck switch
Excellent for someone with limited physical mobility
You suck or puff to activate switch
The switch is connected to the computer
Specialist software
can take this input and
act on it many ways
Foot Mouse
Used by someone with limited use of their hands
Can be used to navigate through software programs and can select things
Most consist of two segments, one to control cursor, the other to click
They can include straps to hold the
foot in place. A long cable is
connected to the USB port
Eye Typer
Useful for people who cannot use a
hand or foot operated mouse/ keyboard.
A camera is mounted to the computer and is set
to focus on the user's eye
The camera determines where the person is looking and monitors movements
Slow blink = click
Braille Keyboard and Printer
Writing system for the visually
impaired/blind. Made up of raised dots that
can be read by 'touch'
Braille Keyboard: specialist input device that
allows the user to type and enter
text/instructions for the computer
Braille Display: piece of equipment that connects to the computer. It reads
the screen text and presents it to the user via a refreshable braille display
Braille Printer/ embosser: operates by embossing raised braille dots onto
braille paper. Pins are pressed into one side of the paper
Speaker and Mircophones
Speakers
Useful for visually
impaired people in terms of
text to speech systems
The computer generated voice can sound
disjointed and sometimes pronunciation can
make the output difficult to understand
Mircophones
Useful for people who find it difficult to use
a keyboard and mouse
Person speaks their input clearly and then
specialist software is used to convert the
speech/ commands in to text or other options
Screen Magnifier/ Zoom
Zoom tool (software)
Typically 100% to 500%
Useful for people with poor eyesight
Tablet computers also allow you to magnify part of
the screen with a certain gesture of your fingers
Screen magnifier (hardware)
They can magnify the video feed from a standard display and also
magnify paper documents placed beneath the video camera input
Predictive Text
Input technology mostly found on mobile
phones and tablet computers
Allows words to be entered with a single/few
key presses, then the software tries to predict
the most likely word that you want
It allows you to type faster, and
reduce number of presses.
Frustrating when it predicts
the wrong word
Sticky keys
An accessibility feature to aid users
who have physical disabilities
Allows the user to press a 'modifier' key such as Shift, Ctrl,
Alt and have it remain active until another key is pressed