支持android 1.6
在一些方面，这确实比iphone软件里的虚拟按键好，因为它们的位置是固定的，同时还为屏幕省出来更多地方。
In some ways, these are actually better than the soft buttons located in iPhone apps, because they're always in the same place. It also saves some screen real estate.
虚拟按键隔板、发射电路、接收电路、信号中央处理器、声光显示模块、执行器等。
The system comprises a virtual key partition board, a transmitting circuit, the receiving circuit, a signal central processor, an acoustic-optic display module, an actuator and the like.
虚拟键盘就相当难触击，常用按键应该能随时可访问，同时又不侵占有限的屏幕大小。
Virtual keyboards are pretty difficult to touch type and often used keys should probably be accessible without eating the already limited screen real estate.
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