Keyboard slope angle and key-cap shape

15 Jul 2009 - 10:13am
5 years ago
1 reply
965 reads
majid dadgar
2008

Greetings,

I was wondering if there is any registered standard slope angle for
keyboards?
also I was wondering if this current square key-cap is a standard or we
could have them in other shapes?

Regards,
Majid.

--
Industrial Design, BA,
University of Tehran.
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Comments

15 Jul 2009 - 1:15pm
C K Vijay Bhaskar
2009

I am not sure of the angle as it would vary I suppose from company to
company as there is always an optimum range of the angle of the
keyboard - that would conform to reduction of stress to the wrist.
But for the surface shape of the key-cap, I do believe that the
surface area of the key cap is an essential interaction factor to
enable users to type effortlessly on the key board. The hit rate of a
adept user on the surface of a key cap does vary depending on the
shape of the key cap.
>From an anatomy perspective, the fingers tips are not flat, but
slightly beveled. The softness of the finger tips enable the bevel to
become flat and cover more surface area only if the key cap is flat.
More surface area in contact would mean higher probability of hitting
the right key with the right amount of pressure.
If the key cap is not square, but a rectangle or an oval - with a
flat surface, it would consume a larger area in terms of placement of
the rectangular or oval/circle keys. However, the oval or circular
keys would have larger gaps between each key, while the rectangular
one could result in longer, or wider or both shape of the key board.
Apart from these there are other aspects related to relearning and
adoption to the new shape etc which is not cost effective.
Hope this helps.

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http://www.ixda.org/discuss?post=43757

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