Bakker Elkhuizen S-board 840 Numeric - keypad

Bakker Elkhuizen S-board 840 Numeric - Keypad - USB. Compact keyboards reduce the reach to the mouse and thereby also reduce stress on the forearms. Research has shown that about 90% of users never or only sometimes use the numerical part of the keyboard.*
The numerical part should ideally be optional and usable either on the left or right. Compact keyboards are experienced as more comfortable than standard keyboards.**
* Cakir, 2008
** Van Lingen et al., 2003
S-board 840 Design Numeric is a numeric keyboard including calculator.