So we have a piece of paper with conductive ink on, and then add onto that a small circuit board with a couple of chips, one to run some capacitive touch software, so we know where we've touched it, and the other to run, quite often, some wireless software so the piece of paper can connect.
一张带有导电油墨的纸， 再加上一个装着两个芯片的小型电路板， 其中一个芯片可以运行一些电容式触摸软件， 从而知道我们触碰的位置， 另一个芯片，很多时候， 运行一些无线软件来连接纸张。