该设计是基于AT89S51单片机的数字温度计系统，采用温度传感器感应温度在数码管实现温度显示。检测范围为-55℃~125℃，精度到1℃。与传统的温度计相比，这里设计的数字温度计具有读数方便，测温范围广，测温精确，数字显示，适用范围宽等特点。选用AT89S52型单片机作为主控制器件，DSl8B20作为测温传感器通过4位共阳极LED数码管串口传送数据，实现温度显示。该器件可直接向单片机传输数字信号，便于单片机处理及控制。另外，该温度计还能直接采用测温器件测量温度，从而简化数据传输与处理过程。-This design is a digital thermometer AT89S51 microcontroller-based systems, the use of a temperature sensor sensing the temperature in the digital temperature display. Detection range is-55 ℃ ~ 125 ℃, accuracy to 1 ℃. Compared with the traditional thermometer, digital thermometer designed here with easy reading, wide temperature range, accurate temperature measurement, digital display, wide range of features. Optional AT89S52 MCU as the main control device, DSl8B20 as a temperature sensor 4 common anode LED digital serial transmission of data through to achieve temperature display. The device can transmit digital signals directly to the microcontroller, easy handling and control of the microcontroller. In addition, the direct use of temperature thermometer can measure the temperature of the device, thus simplifying data transmission and processing.