Calling all small keyboards

[Steve Cotton]

I don't have one to measure, but the 1991 Psion series 3 has 13.5
keys per row on a 165mm-wide keyboard.

http://en.wikipedia.org/wiki/Psion_3


Maltron's designs are a long way from simply being scaled Qwerty
keyboards, but they've been around since the late 1970s.  They
might be helpful as an example of what had already been considered
by 1993.

http://www.maltron.com/
http://en.wikipedia.org/wiki/Maltron_keyboard

Steve