| 摘要 |
PURPOSE:To prevent occurrence of an input error, by constituting a device in which an operator visulally recognizes an item on a designated panel, corrects it suitably and selects a correct item. CONSTITUTION:Components of force generated at 3 supporting points of an area 3 of a panel 1 are converted to electric signals by a strain gauge, etc., and are inputted to a pre-amplifier 4. Its output are sent to a computer 11 through an analog processing circuit 7, and a calculation of coordinates is executed. Subsequently, in accordance with a result of the calculation, a selected item displayed on the area 3 is informed to a user. On the other hand, an output of the amplifier 4 is inputted to an adder 5, constant or more force is applied, and when an output of the adder 5 corresponding to its force exceeds a threshold level, an AND circuit 9 is opened by an output of a comparator 6. As a result, a clock is counted by a counter 10, and an output of the counter of a prescribed time constitutes a processing instruction to the computer. In this way, when the user pushes the selected item continously for a constant time, the processing is executed. |
