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Assistive Technologies

Assistive Technologies. HND: Unit 13 Multimedia and Authoring. Assistive technologies? .

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Assistive Technologies

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  1. Assistive Technologies HND: Unit 13 Multimedia and Authoring

  2. Assistive technologies? Assistive (can also known as ‘adaptive’ or ‘access’) technologies can enable disabled people to use computer systems/ IT that would otherwise be inaccessible to them using conventional methods.

  3. What technologies are already assisting? • Modern operating systems provide a number of accessibility tools e.g. magnifiers, speech recognition and text-to-speech for people with mild/ moderate impairments. • Modern web browsers also have zoom in/out options allowing users to enlarge the text from web pages - provided they have been correctly coded/formatted.

  4. Screen Readers • Ascreen reader is a software application that assists blind people in hearing what is occurring on their computer. It converts screen content into digital speech and allows interaction fully with it, using keyboard shortcuts. • The main categories of screen reader include: • Screen reader simulation • Go to www.webaim.org/simulations, then select the link Screen reader Simulation.

  5. Text-to-Speech • A text-to-speech program is less flexible and cheaper method of screen reader - designed to help people with dyslexia or learning difficulties in accessing the content of websites. • Go to www.welladjusted.org.uk/ then click on the On/Off button in the Toolbar at the bottom of the screen.

  6. Screen Magnification Software • Screen magnification software is used by people with partial eyesight, to enlarge screen content at various degrees of magnification. • It will depend on the preferences of the person using it. The greater the levels of magnification required, the less information can then be displayed on screen. • Users can also change the contrast and colour setting to suit their specific needs. Low vision simulation • Go to www.webaim.org/simulations, then select the link Low-vision Simulation.

  7. Voice Recognition Systems • A voice recognition system provides an alternative to typing on a keyboard and using a mouse. The user activates computer commands and dictates content using his/her voice. • This type of aid is useful for people with physical disabilities who often find typing difficult, painful or impossible. It can also help those with spelling difficulties, including dyslexic users, because recognised words are always correctly spelled.

  8. Alternative Input Devices • These are devices that enable people with severe mobility impairments to activate computer commands. There is a wide range of such devices: • Including eye and head operated pointing devices. • Sip-and-blow systems controlled by breathing or a single switch. • A full description of alternatives can be found here: http://www.microsoft.com/enable/at/types.aspx

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