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发帖数: 1035 | 1 【 以下文字转载自 EE 讨论区 】
【 原文由 ghw 所发表 】
Very simple.
At one end of horrizontal or vertical direction put the
light( or Hong Wai Xian, sorry, forget the English word), at
the other end put the detector,
then, when the finger touches the screen, it will block the
light or Hong Wai Xian, and the detector of the horrizontal
and vertical direction could get the coordinates of that
point, i.e., (x,y), then the computer could do the
corresponding function. |
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