Dear Marie
Personally, I would have three categories here: 1. Single Switch 2. Switch
Array or Multiple Switch and 3. Joystick. I would then place something like
the Tash Mini in BOTH category 2 and 3, so that someone searching the
database can find it no matter what route one took. [There has even been a
situation where I've had to use a switch joystick as a single switch (i.e.
all four directions do the same thing) but thats another story altogether!]
Regards,
Aejaz
_______________________________________
Aejaz Zahid
Senior Clinical Scientist
Medical Physics & Clinical Engineering
Barnsley DGH NHS Trust
Barnsley S75 2EP
[T] 01226-730000 x2159
[F] 01226-208159
-----Original Message-----
From: Marie Kelman [mailto:[log in to unmask]]
Sent: 15 April 2004 11:50
To: [log in to unmask]
Subject: Definition of a joystick and switch
We are looking to categorise mice, joysticks and switches on a database. The
definition we currently have is:
1. Switch - a single degree of freedom control which may be on/off or
proportional.
2. Joystick - A multiple degree of freedom controller which may be
on/off
or proportional.
However, it may be more appropriate to categorise as follows:
1. Switch - an on/off device which has one or more degrees of freedom.
2. Joystick - a proportional device with multiple degrees of freedom.
The first definition would classify the TASH mini joystick as a 'joystick'
while the second would classify it as a 'switch' as in the TASH catalogue.
I ask this so that when someone uses the database to search for a switch or
joystick they will see the correct devices listed.
Best regards,
Dr. Marie Kelman
Research and Development Manager
Foundation for Assistive Technology
12 City Forum
250 City Road
London EC1V 8AF
Tel: 020 7253 3303
Fax: 020 7253 5990
http://www.fastuk.org
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