Specialist Hardware and Software Devices for Disabled People

Mind Map by , created almost 6 years ago

A level ICT (3.1.2 Software + Hardware components of information systems) Mind Map on Specialist Hardware and Software Devices for Disabled People, created by charcrawford on 11/21/2013.

Created by charcrawford almost 6 years ago
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Specialist Hardware and Software Devices for Disabled People
1 Puff suck switch
1.1 Excellent for someone with limited physical mobility
1.2 You suck or puff to activate switch
1.3 The switch is connected to the computer
1.4 Specialist software can take this input and act on it many ways
2 Foot Mouse
2.1 Used by someone with limited use of their hands
2.2 Can be used to navigate through software programs and can select things
2.3 Most consist of two segments, one to control cursor, the other to click
2.4 They can include straps to hold the foot in place. A long cable is connected to the USB port
3 Eye Typer
3.1 Useful for people who cannot use a hand or foot operated mouse/ keyboard.
3.2 A camera is mounted to the computer and is set to focus on the user's eye
3.3 The camera determines where the person is looking and monitors movements
3.4 Slow blink = click
4 Braille Keyboard and Printer
4.1 Writing system for the visually impaired/blind. Made up of raised dots that can be read by 'touch'
4.2 Braille Keyboard: specialist input device that allows the user to type and enter text/instructions for the computer
4.3 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
4.4 Braille Printer/ embosser: operates by embossing raised braille dots onto braille paper. Pins are pressed into one side of the paper
5 Speaker and Mircophones
5.1 Speakers
5.1.1 Useful for visually impaired people in terms of text to speech systems
5.1.2 The computer generated voice can sound disjointed and sometimes pronunciation can make the output difficult to understand
5.2 Mircophones
5.2.1 Useful for people who find it difficult to use a keyboard and mouse
5.2.2 Person speaks their input clearly and then specialist software is used to convert the speech/ commands in to text or other options
6 Screen Magnifier/ Zoom
6.1 Zoom tool (software)
6.1.1 Typically 100% to 500%
6.1.2 Useful for people with poor eyesight
6.1.3 Tablet computers also allow you to magnify part of the screen with a certain gesture of your fingers
6.2 Screen magnifier (hardware)
6.2.1 They can magnify the video feed from a standard display and also magnify paper documents placed beneath the video camera input
7 Predictive Text
7.1 Input technology mostly found on mobile phones and tablet computers
7.2 Allows words to be entered with a single/few key presses, then the software tries to predict the most likely word that you want
7.3 It allows you to type faster, and reduce number of presses.
7.4 Frustrating when it predicts the wrong word
7.5 Sticky keys
7.5.1 An accessibility feature to aid users who have physical disabilities
7.5.2 Allows the user to press a 'modifier' key such as Shift, Ctrl, Alt and have it remain active until another key is pressed

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