Single Switch Computer Use

A student using a single switch with a software program is most successful when:

1. Switch control is reliable and consistent, and
2. The student understands his switch activation is causing change to happen.

Single switch activities are used to develop these basic skills. We often start with a child's control over a switch-adapted toy. He learns that when he pushes the switch, the toy moves; when he releases the switch, the toy stops. From the mastery of simple cause/effect activities, the child moves on to making more complex choices using a variety of adapted devices, including the computer!

Computer- Switch Interfaces

Children with disabilities may find additional benefits from software programs designed for all children. For them, computer activities can simulate traditional play and learning sequences that are easier to control.

For example, suppose a child likes to watch block towers being built and then knocked down, but is unable to experience this himself due to physical limitations. He can do it "all by himself" with the press of a single key, mouse or switch. He can also color, construct scenes and read a story depending on the software.

As you examine software programs, you will find that many require a limited number of key presses. Often only a simple mouse click is required! Any switch can be used with a variety of computer-switch interfaces to work as single or multiple keys or mouse functions (click, double click, drag).

The concepts are fairly simple. The computer (#1) is connected to the computer-switch interface (#2) which is then connected to the the switch (#3). The interface jack that is used determines what the computer receives when the switch is pressed.

The example above shows the Switch Interface Pro (Don Johnston). When the switch is plugged into the first jack, the computer will take the switch activation as a mouse click. When the switch is to act as the Enter key, it must be inserted into the last jack. See the DJ Switch Interface Pro instructions for more information.

Types of computer-switch interfaces

• Some switch interfaces combine the switch with the interface into a single device; you simply plug it in and use the switch. This works best for a student who can use a "push switch" and who needs only one key/mouse function to control a program.
• Other switch interfaces offer more options, including using a single switch to act as a choice of keyboard/mouse functions.
• Some computer-switch interfaces allow multiple switches.

Switch Interface Instructions

We have selected two popular switch interfaces to provide additional information on switch connection and use: the Switch Interface Pro (Don Johnson Pro) and IntelliKeys (IntelliTools).

Switch Interface Pro
Instructions for setting up and using the interface box for a variety of keyboard and mouse commands.

IntelliKeys
Using IntelliKeys with Switches
IntelliKeys USB
Switch Setting Chart