We used one of these by the DJ station... awful.
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(http://www.oreillynet.com/sysadmin/blog/images/rollupkeyboard.jpg)
Oh, I have ecountered one of those too. I have to admit it was an sailing(boat/yatch), wasn't too good, but didn't have to type on it.
Anything worse is some press-buttons I found on local train for adjusting arm-rest integrated radio controls... Metal with three circles no response, only with things happening...
We used one of these by the DJ station... awful.
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(http://www.oreillynet.com/sysadmin/blog/images/rollupkeyboard.jpg)
i second this
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(http://upload.wikimedia.org/wikipedia/commons/1/1b/Apple_Pro_Keyboard_%28open_top%29.jpg)
Some of the Macs at school have these. These are terrible. High friction, low tactile feedback, and the stabilizers have a tendency to detach from the keys. Typing fast is very difficult on one of theseThey are quite nice looking though.
Agreed. Like mashing potatoes with your fingers. Rubbish.
Then these.
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(http://i1-news.softpedia-static.com/images/news2/Apple-Issues-Wireless-Keyboard-Update-2-0-for-Mac-OS-X-2.jpg)
I'm rather fond of the full size variant of those. At school, it's either that or the IMO far worse white Apple keyboards (of which I posted a pic earlier), and these ones aren't frictiony and the tactile feedback's rather good, so I can type much faster on those. I also like scissors a lot, which may be part of the reason.
Personally though, I don't like the mini variant. Tiny arrow keys are a pain (I demand full sized), and I use the numpad a lot.
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(http://upload.wikimedia.org/wikipedia/commons/1/1b/Apple_Pro_Keyboard_%28open_top%29.jpg)
Some of the Macs at school have these. These are terrible. High friction, low tactile feedback, and the stabilizers have a tendency to detach from the keys. Typing fast is very difficult on one of theseThey are quite nice looking though.
I think that you may have encountered a well used sample. Bad rubber domes degrade quickly with use. The ones that I have tried are not quite as bad as the ones you described.
However, I did notice that the top of the key caps are quite wide compared to the keys on most keyboards, and that makes it more difficult to feel the keys.
These are very very ****.
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(http://www.creativecomputing.net/catalog/images/Razer%20Tarantula%20KB.jpg)
This was the first and only keyboard I have ever needed to return. It was such utter crap I would rather type in a $5 BenQ. Even the rubber roll-ups are better, at least they are water proof and don't pretend to be real.
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(http://www.toadhaven.com/images/Speak%20&%20Spell.JPG)
I remember some of the buttons would wear over time and the letters wouldn't register. You'd think you typed a word correctly, but hear, "You are wrong. Try again.... Incorrect. The correct spelling is..." and it would be exactly the damn thing you thought you were spelling.
I used to laugh at the thing's pronunciation of "n" and "m". It would say "in" and "im". I'd press it repeatedly just because I thought it was funny. I thought it was a computer error. It was only years later I discovered that Texans actually pronounce those letters that way.