Computer and Adaptive Aids
In these modern times Computers are an essential piece of equipment for most people, but they are even more important Assistive Devices for persons with disabilities, including persons with Mobility Impairments. With the advent of the Internet and the multitude of businesses supported online, one’s imagination is the only limit. You can do just about anything from your home computer, including operating a business, doing research, socializing, listening to music, watching TV, movies, playing games, reading books, purchasing products, doing banking and taking part in discussions. Therapeutic treatments and support groups are even available on-line through your computer.
Many persons with Mobility Impairments turn to computers to assist them in the tasks mentioned above and there are a number of Assistive Devices & adaptions available to purchase which make almost any computer accessible for anyone to use.
The availability of this computer equipment and Assistive Devices is increasing thanks to various Organizations and Companies such as Edit Microsystems who have made concerted efforts to make sure that this equipment is easily available for persons with disabilities in South Africa.
To find out more about these Computers, Electronic Aids and Assistive Devices and the companies or organizations that provide them, please read the article below OR click on the shortcut links provided alongside.
What Are You Looking For?
Finding the Right Computer Aid for You: We Can Help
1. Choosing A Computer: Desktop I Laptop I Tablets
2. Choosing The Right Computer Accessories
A. Monitors
B. Keyboards and Alternatives
ii) Typing Without a Keyboard
– On Screen Keyboard
– Switch Input Buttons
– Eye and Head Tracking Systems
– Typing Sticks, Mouth Sticks and Head Pointers
C. Software and Accessories
– Voice Recognition Software
– Other Software
D. Mouse Alternatives
E. Accessibility Tools and Resources
– Disability Answer Desk
– Keyboard Shortcuts
– Mouse Keys
Finding the Right Computer Aid for You: We Can Help
Whether you know what type of Computer Aid you require but are looking for companies that supply them, or need information or advice on what is available, you are in the right place.
DiSA feature information on what is available and feature companies who sell Computer Aids including Edit Microsystems, as well as organisations such as QASA who donate certain Assistive Devices to its members.
Companies that specialise in providing products for people with physical impairments and should be able to advise you on the best type of Computer Aid or Software for you. They can also help set it up and operate correctly as well as service and repair the products that they sell should the need arise. Please see information about these companies listed below:
1. Choosing the right type of Computer
Before purchasing a computer, you will need to decide whether you would require a Desktop, Laptop or Tablet. Each have their advantages and disadvantages, depending on your lifestyle, what they will be used for, type of impairment that you have; assistive devices that you will require to work the computer.
You would firstly need to look at the reason for purchasing a computer and then the advantages and benefits of both Desktops, Laptops and Tablet, which would then determine which one would suit your needs.
If you are struggling to decide which would be best suited for you, take a look at the advantages and disadvantages of each of these options below, to help you decide which to purchase, or find out more via the: Edit Microsystems Computer Buying Guide
1.1. Desktop Computers

Desktop computers offer a variety of benefits, they not as portable as a laptops, but can be a more affordable and powerful option, with more features than Laptop computers, therefor ideal for a classroom, office or organisation. There are also a variety of other advantages that Desktops have over Laptop, which include:
– Desktop computers are easier, and less expensive, to upgrade.
– Desktop computers are generally less expensive overall and offer a better overall value.
– Desktop computers generally have larger monitors, which can also be connected to Laptops.
– Desktop computers have a lower risk of theft.
– Desktop computers have a more comfortable keyboard and a much easier to use mouse.
It should be noted that an aftermarket large, comfortable Keyboard and Mouse or Trackball, are also possible.
There are a variety of different types of Desktops available from various companies but there are advantages to purchasing your machine from companies like Edit Microsytems
Edit Microsytems can supply desktop computers from all brands to your unique specification requirements. If you know what you are looking for, you can send them your specifications and they will quote you. If you are unsure about your computing needs, you can contact them, so that one of their highly trained sales staff can assist you to find the ideal solution based on what you would like to use the computer for.
Contact Edit Microsytems, to find out more about these types of products or to receive a quote.
1.2. Laptop Computers
A Laptop, sometimes called a Notebook, is a portable personal computer, which has a Keyboard and screen that can be folded shut for transportation. Laptops are extremely useful for home, working while traveling or for people who have to spend time in bed or hospital and still need to work on their Laptops.
There are numerous advantages to a laptop, but essentially, the choice comes down to portability versus functionality and cost.
While desktop computers are less expensive, more powerful and more user-friendly, there is a lot to be said for being able to work, check emails, chat online, write papers and play video games anytime and anywhere you like. This is particularly true if you are a person with Mobility Impairments.
And besides, laptops these days are highly adaptable, one can easily purchase a more comfortable Keyboard, Mouse or Trackball, a larger monitor and/or an External Hard Drive to store and backup work if space is an issue.

On a Personal Note: I am a C5 Quadriplegic and use a Trackball and wireless keyboard, with “sticky keys”, “key board shortcuts” and “Numb Pad” for finer work.
I often battle with pressure sores and am sometimes laid up in bed for extended periods. I use an Adjustable Bed, which enables me to sit up enough to work in bed with my Laptop on an Over Bed Table, which means that there is no down time in my business.
I honestly consider my laptop to be one of my best buys.
1.3. Tablets and Mountings
Companies such as Edit Microsystems provide a variety these and other Tablets and Accessories. Please contact Edit Microsytems, to find out more about these types of products or to receive a quote, or Contact Us to see what other types of these products are available in South Africa.
2. Choosing The Right Computer Accessories
Choosing the right computer accessories for people with physical impairments involves matching tools to the user’s strength, mobility, and comfort needs. From ergonomic keyboards to adaptive mice and switch controls, the best choice is one that supports independence, reduces strain, and enhances everyday usability. Please click on the relevant categories listed below to find products that can assist which are available in South Africa.
A. Monitors
All computers comprise of a Monitor, whether they are Desktops or Laptops. A Monitor is an output device that displays information in pictorial form, it usually comprises the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) with LED back lighting.
Touch screen Monitors are also available for certain types of software, particularly those that do not require pixel-accurate pointing. These monitors use touching of the screen as an input method, items can be selected or moved with a finger, and finger gestures may be used to convey commands. The screen will need frequent cleaning due to image degradation from fingerprints.
There are a variety of different types of Monitors available on the market today, from a diversity of sources. Edit Microsytems also supplies LCD and LED monitors in a wide range of sizes and connectivity options. Their monitor range includes touch screen monitors for special education needs. Contact Edit Microsytems, to find out more about these types of products or to receive a quote.
B. Keyboards & Alternatives
Standard keyboards and a mice are functional ways of interacting with your computer and increasingly other devices like tablets. However, these standard devices can pose difficulties for many people, especially those users with physical, sensory, or cognitive challenges. There are lots of other options available. Being physically comfortable when using your technology is extremely important and extends beyond having a keyboard or mouse that is comfortable to use.
Poor-posture, over-stretching or discomfort can result in aggravating existing conditions or in developing longer-term issues such as Repetitive Strain injuries (RSI’s). Good posture and comfortable working is important for everyone and finding something that works for you is obviously more important in preventing problems than in reaction to them.
The standard computer keyboard is designed to be used with two hands and has a number pad on the right-hand side, which obviously favours right-handed people. Fret not, there are numerous alternatives to the standard keyboard available on the market today including:
i. Ergonomic Keyboards

Ergonomic Keyboard are designed to promote a better typing position for your hands and wrists and therefore reduce the chance of strains and discomfort that can ultimately lead to significant issues such as Repetitive Strain Injuries (RSI). Ergonomic keyboards ‘split’ the keyboard in two, placing each half on a curve so your arms are at a more comfortable, relaxed angle when typing.
Some ergonomic keyboards are on a fixed curve. On others, the two halves are hinged in the middle so the angle can be adjusted. On others, the two halves are completely separate and only joined by a connecting wire.
More contoured Keyboards are a further development of the split concept. These place the finger keys into two cupped depressions at shoulder width, with function keys set in-between for use with the thumbs. These fully ergonomic keyboards require very little movement of the arms and wrists and are designed to reduce the risk of RSI. Similar keyboards (with a non-QWERTY layout) are also available for single-handed users, for either left or right-handed use.
An example of these specialised Keyboards, available from Edit Microsystems, is:
ii. Keyboards with Large Key
Keyboards with larger keys (like BigKeys and Jumbo Keyboards) are specifically designed to aid people with visual and mobility impairments navigate the board.
Options are also available with upper- or lower-case layouts.
There is a variety of different types of large key Keyboards available on the market today, including the Jumbo XL featured below, which is available from companies like Edit Microsystems.
To learn more about Computer Aids for persons with visual impairments, please visit our Visual Impairments section.

iii. High-Contrast Keyboards

High visibility keyboards use high-contrast colours to make the keys easier to locate.
There are many different colour combinations with either the keys or the letters as the ‘stand-out’ colour (eg. yellow on black, black on yellow, black on white, white on black).
There are various types of High Contrast Keyboards available on the market today – including those featured below, which are available from Edit Microsystems.
To learn more about Computer Aids for persons with visual impairments, please visit our Visual Impairments section.
iv. Early Learning Keyboard
Early Learning Keyboards have a simple layout. They have no function keys, and are Ideal as an introduction to keyboarding, connecting via USB or PS2 connections. Below are a few examples of Early Learning Keyboards, available from Edit Microsystems:
Accuratus Monster 2 – Early Learning Keyboard with Large Keys
For young children the Monster 2 Early learner (pictured right) is the perfect entry into computing, with large oversized keys grouped in different colours and a special printed case making learning easy and fun. The monster 2 also has a detachable wrist pad to make the early stages of typing much easier. The keyboard layout is based on a standard UK keyboard layout so when a child grows up and progresses to an adult board the keys will be in all the normal places.

v. Smaller, Compact Keyboards
Compact keyboards, as their name suggests, are smaller keyboards. The actual key sizes are quite similar to a standard laptop keyboard and, like a laptop, space is saved by removing the number pad (this can be separate, or some have one that slides out when needed).
A compact keyboard frees-up desk space and allows you to bring your mouse (or the other things you need) closer to your centreline, which helps to reduce over-extending. As they are smaller, compact keyboards can fit more easily between the arms of a wheelchair and are often more comfortable to use for single-handed users. An example of a smaller Compact keyboard is the Accuratus K82D Featured below:

Accuratus K82D Mini Scissor Key Keyboard
The Accuratus K82D: USB Premium Mini Scissor Key Keyboard with Trackball is specially designed for meeting high spec requirements. Boasting one of the smallest footprints out of all Accuratus keyboards, the K82D is perfect for situations where space saving is essential. The keys on this keyboard are scissor key design, giving you a very soft and tactile touch for hours of comfortable typing.
vi. Keyguards and Other Specialist Keyboards
There are a wide variety of different types of Keyguards and specialist keyboards that can assist persons with disabilities, including persons with Mobility Impairments. Keyguards are rigid plates with holes designed to work with specific keyboards. The holes are positioned over each key and significantly reduce the chance of accidental keypresses. The guard also allows you to rest your hands and arms on the guard without pressing any of the keys. Guards can be removed and fitted for use only when required. It is usually easier to purchase a keyboard and guard together rather than trying to get a guard to fit a specific keyboard.
Various types of these Keyguards are available from companies in South Africa, such as Edit Microsystems who sell the following products:
Typing Without A Keyboard
As mentioned above, you do not have to use a physical keyboard to control or type on your computer, tablet or smartphone.There are a variety of possible alternatives, including using:
i. On-Screen Keyboard
On-screen keyboards are the way most people now type on tablets and smartphones but are also standard features on most operating systems. Letters can be selected using a touchscreen, a mouse, a switch, or a joystick. Touchscreens use sensors in the screen to track movement and selections and are a very direct and method of interacting with your device.
Tablets and smartphones use touchscreens as well as many laptops. Touchscreen monitors are also available for use with desktop computers. Touch screen Monitors are also available for certain types of software, particularly those that do not require pixel-accurate pointing.
These monitors use touching of the screen as an input method, items can be selected or moved with a finger, and finger gestures may be used to convey commands. The screen will need frequent cleaning due to image degradation from fingerprints.
There are several types available, but you should try to avoid using ‘add on’ touch-screens such as those that fasten over your standard monitor, as these devices lack the accuracy and robustness of modern touch monitors and can cause problems as some learners are more interested in trying to pull them off than using them appropriately. There are a variety of different types of Monitors which are available from various companies in South Africa, such as:
ii. Switch Input Buttons
Switch Input Buttons sends a signal to the computer when activated, the switch can also be replaced with a sensor that detects an eye blink, a puff down a tube or any reliable body movement. An on-screen keyboard, word or pictogram board is used to highlight rows, columns or groups, gradually narrowing-down a selection with each activation of the switch until the desired word or letter is the last option left. Switches work well with cause and effect programmes that require simple choices but are in no means limited to this; skilled operators have few restrictions to what they can do. These types of products are available from various companies in South Africa, including Edit Microsystems who sell the following products:

iii. Eye and Head Tracking Systems
Eye Tracking and Head Tracking systems both operate an onscreen keyboard using the mouse. These devices were initially designed for use by people with very limited movement, eye tracking hardware and software is now relatively inexpensive and can present an interesting alternative for people experiencing temporary or situational disabilities; for example, a parent could hold their baby and still be able to interact with their computer.
C. Software and Accessories
Choosing the right computer accessories for people with physical impairments involves matching tools to the user’s strength, mobility, and comfort needs. From ergonomic keyboards to adaptive mice and switch controls, the best choice is one that supports independence, reduces strain, and enhances everyday usability. Please click on the relevant categories listed below to find products that can assist which are available in South Africa.
Voice Recognition | Speech-To-Text Software

Voice/Speech-Recognition Software enable you to run your computer entirely with your voice, it converts speech to text, and allows users to perform commands and even move the mouse without touching anything. Voice recognition is a practical way of controlling your computer and a very efficient means of getting information down and is useful for people who find typing difficult, painful or impossible, such as someone who has a physical disability, but it can also by-pass issues with things like spelling or grammar and so can be a great help to people with learning differences like dyslexia.
There are a variety of options available including a free one that comes with windows and Dragon Naturally Speaking (also known as Dragon for PC). This speech recognition software package, runs on Windows personal computers . It requires quite a bit of RAM (Random Access Memory) to run well and the right microphone.
This and a variety of similar Speech/Voice Recognition Software is available from companies such as Edit Microsytems
i. Microphones, Speakers and Headsets
There are many different microphones that work well with Voice/Speech-Recognition Software, but the better microphone results in better accuracy.
The person using it, talks into a mike and the words are then translated into text. After you set it up, it provides a Tips function, which you can leave on for a while so you keep learning tricks every time you start the software.
You will also need to train it to learn and understand your voice. If used correctly, it should improve every time you use it.
Your voice, how you use the microphone, your environment, and your PC are a few of the variables that determine what is a good microphone for you, the same applies to the microphones you will find comfortable, it is a personal preference.
The Microphones vary in type and price and include:
– Basic headsets and mike
– Cordless headsets and mike
– USB headsets and mikes
– Microphones mounted on a desk.
Each type has its pros and cons, and each are available from Edit Microsytems, who sell a variety of products including those listed below. Edit Microsytems also provides a variety of other portable headsets which allow you to engage in a variety of activities anywhere anytime.
Edit Microsystems also provide a variety of other Headset- Speakers and Microphone devices to suit your needs, including various portable headsets which allow you to engage in a variety of activities anywhere anytime. They include the:
Other Types Of Software

There is also a wide variety of other types of Software available on the market today, available to purchase from Companies such as Edit Microsystems.
They supply a wide range of pre-loaded software, including Microsoft Windows and Office, as well as various other programs specifically designed to assist persons with Mobility Impairments to operate a computer and type easily, such as:
D. Mouse Alternatives
The regular Mice/Mouse which is purchased and used with most computers can be difficult to use by young children and persons with Mobility Impairments who have limited use of their hands, including persons with Arthritis and persons with carpal tunnel syndrome.
Trackballs and some other mouse alternatives are also handy when desk space is at a premium and are also easier to use and require less overall effort. They are recommended if you are already suffering from carpal tunnel syndrome and experience pain when moving your forearm.
There are many different types of Alternative Mice/Mouse available, depending on your disability, impairment, or difficulty. It is important to choose one that fits the hand well, feels comfortable and is easy to use, it often takes a little while to get used to using a new type of mouse and can feel a little clumsy at first. Alternatives to the standard mouse include:
i. Ergonomic Mouse
Ergonomic Mice have been designed to reduce muscle strain and decrease discomfort (while using the mouse) associated with a injuries such as carpal tunnel syndrome, arthritis, and tendonitis. Compared to other mice, an Ergonomic Mouse is designed to fit a more natural hand position when being used.
Ergonomic Mice often come in left- and right-handed orientations and in different sizes, to ensure the mouse fits comfortably.
Vertical mice realigning the wrist to a more natural ‘handshake’ position, transferring movement onto the more powerful shoulder muscles.
Adjustable Ergonomic mice are hinged along one side and allow for the mouse to alternate between a flatter more traditional position and the vertical, this encourages a variable wrist position and can help move from a normal mouse to a vertical.
ii. Rollball Mouse
Roll Bar Mice are positioned directly in front of the keyboard and have a ‘bar’ that slides left and right and rolls for up and down movement, eliminating the need to reach for the mouse and reducing unnecessary wrist movements, which can stress your neck, shoulders and elbows. Many of these Roll Bar mice include handy shortcut buttons including double click and copy and paste.
The position of the bar allows it to be operated with your thumbs and keeps your hands on or close to the keyboard. There are various types of these products which are available from companies in South Africa.
iii. Trackball / Roller Ball Mouse
A Trackball or Rollerball Mouse remains stationary with the cursor controlled by rolling a ball with your thumb, fingers, palm, or back of the hand. There is therefor little to no wrist movement, which is ideal for persons with limited hand function who battle to use both the regular Mouse which is sold with a Desktop Computer, or the Mouse Pad used with a Laptop.
A Trackball is basically an upside-down mouse with an exposed protruding ball, which is used to move the pointer. The Trackball has no limits on effective travel and the operator just continues rolling, whereas a mouse would have to be lifted and re-positioned.
Some Trackballs have notably low friction, as well as being made of dense material such as glass, so that they can be spun to make them coast.
The Trackball’s buttons may be differently situated to that of a typical mouse and you get a variety of different types and styles of Trackballs, including cordless ones, which can be handy.
You will need to find one that suits your needs and pocket, as the Trackball is generally more expensive than the normal mouse and more difficult to find in South Africa.
Trackballs are however available from companies such as Edit Microsystems, who also sell some of the following products:

Edit Microsystems also provide a variety of other Trackballs which allow you to operate computers easier, contact Edit Microsytems, to find out more about these types of products or to receive a quote, or Contact Us to see what other types of these products are available in South Africa if Edit Microsytems cannot assist you.
iv. Large Trackball Mice

The Large Trackball Mice are easy to use and may be particularly helpful for users who lack fine motor skills, including children and people with limited hand use, learning difficulties, tremors or arthritis. Also, like the BIGtrack mouse (with switches) shown here, they can be strong and are often suitable for being operated by elbows or feet.
These Large Trackballs can be used for easy precision. The large ball requires less fine motor control than a standard trackball and it is ruggedly built.
This was the first type of Trackball that I used after injury and gave me good practice to eventually use a normal trackball.
These large Trackballs are cheaper than normal Trackballs and are available from companies in South Africa, such as Edit Microsystems who sell the following products:
v. Touchpads
Touchpads (or Trackpads) are stationary pads operated by sliding (or swiping) your finger(s) across the surface; clicking can be done with buttons or by downwards pressure / tapping lightly on the surface. These types of products are available from various companies in South Africa, including Edit Microsytems who sell the following products:
Edit Microsytems also provide a variety of other Joysticks which allow you to operate computers with greater ease. Contact Edit Microsytems, to find out more, or Contact Us to see what other types of these products are available in South Africa if Edit Microsytems cannot assist you.
vi. Joysticks
Joysticks work in a similar manner to the controls on an electric wheelchair, with the joystick position determining the direction (and speed) of the mouse pointer.
Additional buttons on the joystick can operate left, right and double clicks, as well as other common shortcuts such as cut and paste.
These types of products are available from various companies in South Africa, including Edit Microsystems who sell the following products:

Edit Microsytems also provide a variety of other Joysticks which allow you to operate computers with greater ease. Contact Edit Microsytems, to find out more, or Contact Us to see what other types of these products are available in South Africa if Edit Microsytems cannot assist you.
vii. Pen Mice, Graphics Tablets and Foot Mouse
There are also various other options to controlling your computer, including a Pen Mice, Graphic Tablets, the Foot Mouse and the GlassOuse.
a. Pen Mice
Pen mice are held in the hand like a pen. They tend to be quite ‘chunky’ sand are a similar size to a marker pen. Left and right click buttons are vertical on the pen shaft. There are various types of these products which are available from companies in South Africa, Contact Us to find out more.
b. Graphics Tablet
Typing Stick, Mouth Stick and Adjustable Head Pointers
There are a wide variety of different Typing Sticks, Mouth Sticks and Head Pointers, which can be used for typing by persons with Mobility Impairments, depending on the type & degree of your disability, There are a wide variety of different Typing Sticks, Mouth Sticks and Head Pointers, which can be used for typing by persons with Mobility Impairments, depending on the type & degree of your disability. These include:
E. Accessibility Tools and Resources
i) Disability Answer Desk
ii) Keyboard Shortcuts
Disclaimers and References
Talking Calculators






















