| 摘要 |
<p>PURPOSE:To indicate the availability of key operation corresponding to the degree of skillfulness of an operator by varying the discoloration time of a key which is touched according to the time intervals of a key touch. CONSTITUTION:When the operator depresses a key with a '1' display on a touch panel successively to a key with a 'C' display, a control part 13 finds the difference in key depression time between last key depression time which is set in a register 14 and the current key depression time of the '1' key. Then the time (t) which is the interval of key depression is found and then the control part 13 sets the current '1' key depression time in the register 14. The control part 13 finds the discoloration time when the key depression interval time is the time (t) by using a table (stored on the memory in the control part 13). When t2<t<t3, n2 is found as the discoloration time. Consequently, the control part 13 puts a screen display back in the original state after the '1' display key discolors for the time n2, so the key operation is performed according to the degree of skillfulness of the operator.</p> |
