The model I have tested with PPC Linux is the older, translucent-and-silver version with a switch between the input and output jacks.
我在PPC Linux上测试的模块比较老，它是一个半透明的银色版本，输入输出之间有一个开关。
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That makes Mohanty's silicon bar a kind of nanomechanical switch in which the two voltages are inputs representing a 0 and a 1, and the output depends on whether the input is rising or falling.