This paper presents a design of a small electronic weather station controlled by MCS-51 micro control unit (MCU), and the data is collected through relevant sensors based on micro control unit, then the data is sent to the PC by a serial port, relevant information display and recording are completed on the PC. The design presented in this paper could not only meet the monitoring requirements, but also effectively reduce users' costs.%本文提出一种基于MCS-51系列单片机的小型电子气象站设计，由单片机通过相关传感器采集数据，再由串口发送到PC机，在PC机上完成相关信息的显示与记录。在满足监测要求的同时，有效地降低用户的使用成本。
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