Chapter 5 Using Overlay Keyboards

Table 5-3 Overlay Keyboard driver software features

 

 

Overlay

DRIVER SOFTWARE

 

Keyboard

 

 

Text

 

Control, Modifier & Cursor Keys

 

Mouse Control

 

Input Acceptance Filter

 

Post Acceptance Filter

Repeat Filter

Sticky Keys

Auditory Feedback

Digitised sound output

Speech output

Print-out Overlay

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BBC

Concept

 

 

 

 

 

 

 

 

 

 

 

BBC Concept

Keyboards

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Acorn

Concept

 

 

 

 

 

 

 

 

 

 

 

Conform+

Keyboards

 

 

 

 

 

 

 

 

 

 

 

Acorn, Windows PC

Concept

 

 

 

 

 

 

 

 

 

 

 

Informax

Keyboards

 

 

 

 

 

 

 

 

 

 

 

Mac

Concept

 

 

 

 

 

 

 

 

 

 

 

Intercept

Keyboards

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Windows PC

Concept

 

 

 

 

 

 

 

 

 

 

 

Concept Plus

Keyboards

 

 

 

 

 

 

 

 

 

 

 

Windows PC

Concept

 

 

 

 

 

 

 

 

 

 

 

Concept Plus

 

 

 

 

 

 

 

 

 

 

 

Keyboards

 

 

 

 

 

 

 

 

 

 

 

Multimedia

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mac, PC

Intellikeys

 

 

 

 

 

 

 

 

 

 

 

Intellikeys

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mac, PC

Intellikeys

 

 

 

 

 

 

 

 

 

 

 

Overlay Maker

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mac

Key Largo,

 

 

 

 

 

 

 

 

 

 

 

Discover:Board

 

 

 

 

 

 

 

 

 

 

 

Ke:nx

 

 

 

 

 

 

 

 

 

 

 

Ke:nx On:Board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Which overlay keyboard is best?

To choose an overlay keyboard you have to specify the functions needed by the user, the curriculum and learning tasks, and then select the most appropriate combination of hardware and software. Cost, the computer and software that you want to use, and the ease of use of the keyboard and software are also key issues.

Acorn

The most popular overlay keyboards for Acorn RiscOS computers are the Concept Keyboards with either Informax or Conform+ software. If you wanted to create overlays for detailed pictures or maps then the Informatrix with 4096 keys, with Informax software, would be the best choice.

It is possible to plug in the IntelliKeys device into A7000 or RiscPC machines as they have ‘PS/2’ keyboard connectors, but you can only use the standard overlays – the OverlayMaker software does not run on Acorn RiscOS.

Macintosh

If you were working on a particular curriculum topic and using a program like ClarisWorks Templates on a Mac, then the Concept Universal might be most suitable as the Templates are supplied with ready-made overlays, and the keyboard itself is cheap.

But if you wanted an overlay keyboard to work with all programs on the Mac, and replace all the functions of the standard Macintosh keyboard and mouse, you might choose Intellikeys or Discover:Board in preference to the Concept Keyboards with Intercept software, because the latter

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