Is RS232 an interface or a protocol?

Application development
1

I bought some devices that support RS232 interface, but I don’t know how to extend the communication distance of these devices. I read this article, which probably solved my problem, but I have a new question: Is RS232 a protocol or an interface?

1 Like
2

Nicely described and including history - Wikipedia - RS232

BR, Jan

3

okay, I got it, it helps me a lot