| 摘要 |
<p>The operational key unit (13) has a thickness which enables it to be held by one hand. When the teaching panel 81) is gripped by the left hand, the left side shift key (11) is located at a position enabling easy operation of it (11) by the thumb of the left hand, which is a free finger. Similarly, when the teaching panel (1) is gripped by the right hand, the righe side shift key (12) is located at a position enabling easy operation of it (12) by the free thumb. A right handed worker can hold the teaching panel in the left hand and operate the shift key (11) with the thum of the left hand and, while doing so, use the right hand fingers to freely operate for example, the 'FORWARD', 'BACKWARD', and other operational keys.</p> |
