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Input and Output Devices For Disabled People
Introduction to input and output devices for disabled people
What is input device?
Input device are the device through which data and instruction are entered into a computer. An input device converts data and instruction into electrical signals (binary form) that can be accepted by the computer.
There are devices available to ouput information from a copmuter. Two common input device are:
What is output device?
Any machine capable of representing information from a computer.
An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) to the outside world.
There are devices available to ouput information from a computer. Two common output device are:
Monitor (Visual display unit)
Introduction of disabled people
Who are Disabled people?
Disabilities is an umbrella term, it covers those people who has an problem regarding the following:
An impairment is a problem in body function or structure; an activity limitation is a difficulty encountered by an individual in executing a task or action; while a participation restriction is a problem experienced by an individual in involvement in life situations. Thus disability is a complex phenomenon, reflecting an interaction between features of a person’s body and features of the society in which he or she lives.
Input and Output device for disabled person
Being disabled does not mean that you can not use computer or the Internet. Some of the input and output device which help disabled people to acess computer and internet are as follow:
Input Device for disabled person
Magic Wand Keyboard
A Miniature Computer Keyboard and Mouse for People with Disabilities
Needs No Strength, No Reach, No Dexterity, Just the Slightest Hand or Head Movement
Magic Wand Keyboard
Measuring 7" x 6" x 0.5", with a typing area of only 5.4" x 3" (the Advanced Magic Wand Keyboard is 1" wider).
The keyboard works with the slightest touch of a wand (hand-held or mouth stick). It requires absolutely no force. The mouse works exactly like a standard mouse, with every function built in, but needs no hand dexterity.
The Magic Wand Keyboard allows disabled people with limited or no hand movement to access any IBM or Apple Macintosh computer using only slight hand or head motion. It is the only computer keyboard, and mouse, that requires no strength and no dexterity.
2. Micropoint pointing device
MicroPoint, by Zygo, an alternative pointing device
MicroPointTM Pointing device.
Has an operating range of only 1-1/8 inch (28 mm) square. Fingertip control, might be a solution for computer users have limited range of motion and cannot handle a standard mouse. Compatibility with:
Windows 9X and Windows ME
9-pin or 25-pin serial port
PS/2 mouse port
Output Device for disabled person
Tongue Device for Disabled People
Engineers at the Georgia Institute of Technology has invented a tongue device which can help disabled people to control a wheelchair, operate a computer or interact with the external environments by using only the tip of their tongue. The invention of this tiny device brings another hope to individual with severe disabilityto be more independent.
Screen magnifiers enlarge the information displayed on the computer screen in a range of magnifications and a variety of fonts. The magnifier my have the ability to create a large, scrolling virtual screen, or may only magnify the portion of the display near the mouse pointer. .
It solutions assist a user who is unable to articulate to communicate with others. Voice synthesizers, either hardware or software, can produce a variety of voices which are clearly understandable. The coupling of these devices with an on-screen keyboard and head-mounted activating switch can enable a severly disabled person to speak using a single switch. In addition, the combination with word completion software makes the system very efficient.
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