在人机互动方面，采用改进型I/O端口复用键盘实现用户数据输入，使用两位数码显示管完成温度数据显示。
In the aspect of man-machine communication, we use the improved reused keyboard of I/O port to implement the users' data input, and displaying the temperature by two numeral displayers.
基于数字温度传感器ds18b20的测温仪设计，三位数码管显示温度值，保留小数点后一位。
Digital temperature sensor based on the thermometer DS18B20 design, the three digital display temperature, keep one decimal place.
说明：51单片机外中断实验C源码，两个实验：1、外中断计数2位数码管显示；2、外中断计数器。
SCM experiment C source code external interruption, two experiments: 1, outside interrupt count two digital tube display 2 and external interruption counter.
本机为三位数码管显示，运行状态时，数码管显示当前喷吹的回路；
This controller is three digital tube display. When in running state, the digital tube shows the current cleaning channel;
MAX72 19是一种串行接口的8位数码管显示驱动器。
MAX7219 is a serially interfaced, 8 digit LED display driver.
MAX72 19是一种串行接口的8位数码管显示驱动器。
MAX7219 is a serially interfaced, 8 digit LED display driver.
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