使用笔记本搞开发的朋友，经常会遭遇到电脑没有COM口的烦恼，买一个或者做一个？windows下的USB转RS232的驱动倒是很多，linux下的就难得了。这里我写了一个。-Engaged in the development of the use of notebook friends, often met with no COM port of computer troubles, buy one or make a? windows under the USB to RS232 driver