其中硬件包括：mcu、电源、输入输出、通信等模块。
The hardware is composed of MCU, power, input and output, communications module.
电源模块的作用是将5v的输入电压转化为3.3 V和1.8 V输出，为系统供电。
The power module changes 5v input power into 3.3v and 1.8v, for supply the system energy.
介绍由at89c52、RAM、AD574、电源电路、模拟量输入采集处理等模块组成的数据采集系统。
The data acquisition system was introduced which was composed of AT89C52, RAM, AD574, power circuit, analog quantity input acquisition module, etc.
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