| 摘要 |
<p>The keyboard is fitted to an electric typewriting machine and uses the thumb and all fingers of each hand to strike the keys. This eliminates any sideways movement. The touch bar is in the form of an inverted tee, the vertical portion separating the keys of the left from those of the right hand. Horizontally, the keys of each line on each side are arranged as a natural arc for correct use of fingers and thumb. This is adjustable about a mean position. Vertically, the keys are arranged in parallel lines, each finger only working over a single vertical line.</p> |
