本文利用LabView 和 C 语言分别对上位机和单片机进行串口通信程序的编制,介绍了通过串口实现高频开关转换电路的软件和硬件组成。 关键词:LabVIEW;VISA;RS232 串口;C51;RTX51 TINY Abstract: This paper introduces serial communication based on LabView and C51. The hardware and software of the transfer circuit of high frequency switch are discussed in detail. Key Words: LabVIEW;VISA;RS232 serial port;C51;RTX51 TINY