问题
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How can I send data from a web page to a serial port?
Is sending data from PHP web page to one of the serial ports of visitor's computer possible or not?
If it is yes, how?
If it is not, basicly, I want to write a client for a web backend that retrieves the data from the web and then writes the retrieved data to a serial port. Can you help about that?
回答1:
Not over the internet, as that would be very dangerous, the user would have to have special software. Otherwise web programs could (very) easily be used for malicious purposes.
来源：https://stackoverflow.com/questions/14148981/how-can-i-send-datas-from-web-page-to-serial-port-of-visitors-computer