MIDI控制器与合成器通过电线相连接，利用异步串行接口可以在不同设备间传送命令。
MIDI controllers and synthesizers are connected using cables that allow the commands to be sent between devices using an asynchronous serial interface.
因为它基于串行接口，所以SAS允许增加设备支持。
Additionally, since it is based on a serial interface, SAS allows for increased device support.
微处理器采用89c52，并且串行接口采用了RS - 485，可以进行在线下载和调试，以及与其它设备的连接。
The microprocessor adopts 89c52, and serial interface has adopted RS - 485, can download and debug online, and connect with other equipments.
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