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介绍了以8031单片机为中央处理器的温／湿度测试仪的硬件电路结构和软件设计原理。该测试仪采用热／湿敏元件与555构成的振荡电路作为信号转换接口，用度间隔方式解决温／湿度测值与对应的振荡频率之间的非线性的矛盾，具有性能价格比高，用途广泛等特点。
Introduced the hardware circuit structure and software design principle of temperature / humidity tester with 8031 single-chip microcomputer as the central processor. The tester uses the heat / humidity sensor and the 555 oscillator circuit as a signal conversion interface, with the interval method to solve the temperature / humidity measurement and the corresponding oscillation between the nonlinear frequency of the conflict, with high cost performance, use Wide range of features.