What is RS232 and What is it Used for?
6:28
What is RS485 and How it's used in Industrial Control Systems?
10:56
RS-232 Explained: Working Principle, Pinout, Cables & Applications
26:10
The RS-232 protocol
8:06
What is Ethernet/IP?
11:50
Understanding SPI
8:58
What is Modbus and How does it Work?
16:09
Control LEDs with your computer using RS232!
9:06