Computers have revolutionised life fordisabled people. They are used by:Severely disabled people tocommunicateDyslexic peopleThe blind and visually impairedThose with learning difficulties.The hardware may be standardhardware, or it may be modified to thespecific needs of the disabled person.
Head mouseThe disabled person can movetheir head, and the mousewill behave on the screen justlike a normal mouse that wemove with our hand.Eye-trackerOne such device is an eyetracker, which allows anindividual to control acomputer cursor by moving
Electronic pointing devicesused to control the cursor on the screenwithout use of hands. Devices used includeultrasound, infrared beams, eye movements,nerve signals, or brain waves. When usedwith an on-screen keyboard, electronic pointing devicesalso allow the user to enter text or data.On-screen keyboardsprovide an image of a standard or modified keyboard onthe computer screen that allows the user to select keyswith a mouse, touch screen, trackball, joystick, switch, orelectronic pointing device. On- screen keyboardsoften have a scanning option that highlightsindividual keys that can be selected by the user.On- screen keyboards are helpful for individuals who are not able to use astandard keyboard due to dexterity or mobilitydifficulties.
Talking calculatorsTalking Calculator is a perfect Windowsbased calculator for the blind computeruser. It is completely speech enabled.Learning disabled can greatly benefit fromthese simple devices, which relaymathematics via audio. For those withdyscalculia, such a gadget renders it mucheasier to check and double-check assignments.SwitchesUsually attached to the head or a hand or onwheel chair, switches allow users remoteaccess to various computers and other devices withfar more ease than a mouse or keyboard. Like many other
Reading tools and learningdisabilities programsinclude software and hardware designed tomake text-based materials more accessible forpeople who have difficulty with reading. Optionscan include scanning, reformatting, navigating,or speaking text out loud. These programs arehelpful for those who have difficulty seeing ormanipulating conventional print materials; peoplewho are developing new literacy skills or whoare learning English as a foreign language; and people who comprehend better whenthey hear and see text highlightedsimultaneously.