Ergonomic evaluation of the Apple Adjustable Keyboard

摘要

This study presents an evaluation of the Apple Adjustable Keyboard based on subjective preference and observed joint angles during typing. Thirty five keyboard users were asked to use the Apple adjustable keyboard for 7--14 days and rate the various characteristics of the keyboard. Our findings suggest that the most preferred opening angles range from 11--20(degree). The mean ulnar deviation on the Apple Adjustable keyboard is 11(degree), compared to 16(degree) on the standard keyboard. The mean extension was decreased from 24(degree) to 16(degree) when using the adjustable keyboard. When asked to subjectively rate the adjustable keyboard in comparison to the standard, the average subject felt that the Apple Adjustable Keyboard was more comfortable and easier to use than the standard flat keyboard.