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I use two development boards AduC812 from Phytec. Both boards collect the data of two temperature sensors via analog/digital converter. This works without any problems. Because of missing hardware components (only one COM port) the analog/digital converted signals of these two boards must be transmitted via one rs232 cable to the personal computer. My question is how to built a daisy-chained rs232 cable. And how implement this in a µvision2 c# code?