I'm convinced that IBM put feet on the Model F to emulate this -
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(http://www-03.ibm.com/ibm/history/exhibits/pc/images/02108.jpg)
And everyone else blindly followed.
I still prefer it when the feet are raised, even though it's supposedly unergonomic.
so it is true that lifting the feet is ergonomic eh?
i wonder if you have any typing difficulties especially pinkie when typing with the feet off?
Show Image
(http://www-03.ibm.com/ibm/history/exhibits/pc/images/02108.jpg)
Note that her wrists are straight, and her elbows are below the height of the keyboard. Hence the slope of the keyboard is acceptable.
For most people these conditions will not be the same, so raising the back of the keyboard is not appropriate.
I think the real reason for raising the back of the keyboard is to make it easier for non touch typists to read the keys. It's that silly.
This is what will happen to your hands if you use the keyboard feet:
(http://magicstatistics.com/wp-content/pictures/art/Titian%20St%20John.jpg) (http://geekhack.org/showpost.php?p=152852&postcount=16)
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(http://www-03.ibm.com/ibm/history/exhibits/pc/images/02108.jpg)
A frozen grin on the face must be quite important too. I see that in all pictures on ergonomic typing.
As long as you're not doing this it's all personal preference.Show Image
(http://www.osha.gov/SLTC/etools/computerworkstations/images/comp_keyboard_bent_wrist.gif)
One of the reasons why you don't do that is because every joint in your body has a "neutral" position that is roughly in the middle between the two end ranges of motion. It's in this middle angle that you make the most efficient use of your muscles. The farther away you are from that middle range, the greater amount of stress each keystroke or motion causes on your muscles and tendons.
As long as you're not doing this it's all personal preference.
Show Image
(http://www.osha.gov/SLTC/etools/computerworkstations/images/comp_keyboard_bent_wrist.gif)
But I do recommend keyboard trays for a lot of reasons.
thanks..this is what i need:D