protel99中本身没有的元件封装类型-protel99 components in the package is not the type of

设计了一种多通道温度测量控制系统，采用AT89系列单片机作为内核，选用热敏电阻为测温元件，实现了对多路温度信号的巡回检测。给出了系统的硬件结构，测温元件的线性化方法及数据采集软件流程图。-Designed a multi-channel temperature measurement control system, used as the AT89 MCU core, optional thermistor for temperatur