The key here is that the ordering system is implemented to accept a single record, whereas the input into the mediation module is a nested batch message.

这里的关键是将订单系统实现为接收单个记录，而到中介模块的输入是嵌套式批处理消息。

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Hardware circuit includes key control module, display module, plastic module of input signal, single chip computer control module and CPLD main control module.

其中硬件电路包括键控制模块、显示模块、输入信号整形模块以及单片机和CPLD主控模块。

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