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Function that analog quantity outputs, tests and corrects.
模拟量输出、测试及校正功能。
Because DSP has analog-digital conversion interface of 10 bit, this type of interface act as sampling of analog quantity.
由于数字信号处理器具有10位的模拟——数字转换功能的接口，本文使用它的模数转换接口作为模拟量的采样。
The data acquisition system was introduced which was composed of AT89C52, RAM, AD574, power circuit, analog quantity input acquisition module, etc.
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。
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