Re: [BLACKBOX] AW: [BLACKBOX] limiting integer values in interactor field

From: [at]} <Chris>
Date: Wed, 13 Jan 2010 10:25:38 +1030

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>-----Original Message-----
>From: BlackBox [mailto:BLACKBOX{([at]})nowhere.xy
>Bernhardt, Gunnar
>Sent: Wednesday, 13 January 2010 3:39 AM
>To: BLACKBOX{([at]})nowhere.xy
>Subject: [BLACKBOX] AW: [BLACKBOX] limiting integer values in
>interactor field
>
>{([at]})nowhere.xy
>calculations) with Services.Action might just be easy enough
>for me to give it a try. :-)
>

That is what my TV does when I'm trying to change channels. It waits for a
while to allow me to enter the second digit but if I take too long it
assumes I've finished. Sounds like a good idea but can be infuriating at
times e.g. while I'm trying to remember if I need 72 or 73 it switches to
channel 7 instead. My wife wonders why I scan through the channels instead
of selecting them. I have to press the button more times but can switch off
my brain while doing it.

My CD player has a different system. If I want to select a track number
greater than 9 I have to first press a button '>9' and then it allows me to
enter two digits. The problem with that is I don't remember that I should
have pressed '>9' until I've entered the first digit and it has already
started the wrong track.

I find the least perplexing approach when the number of digits is unknown to
the system in advance is when I'm required to confirm that I have finished
entering them. e.g. by pressing the tab key, enter key, or click on OK etc.

----
An inspirational book on the subject of user interfaces is "The Inmates are
Running the Asylum - Why High-Tech Products Drive Us Crazy and How to
Restore the Sanity" by Alan Cooper (the "Father of Visual Basic"). ISBN
0-672-31649-8 Sams Publishing.
Also recommended is "The Zen of Palm - Designing products for Palm OS" (I
find my Palm to be the easiest of the gadgets I use - it has less  surprises
for me than the toaster in our kitchen!)
  http://www.accessdevnet.com/docs/zenofpalm.pdf
For Windows-specific guidelines see:
  http://msdn.microsoft.com/en-us/library/aa511328.aspx
Regards,
Chris Burrows
CFB Software
Armaide: ARM Oberon-07 Development System
http://www.armaide.com
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Received on Wed Jan 13 2010 - 00:55:38 UTC

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