This design idea (DI) does exactly that by using asynchronous RS-232 to power and count pulses from a simple 10-kHz voltage-to-frequency converter (VFC). Getting only one bit of info from each 10-bit ...

i'm trying to buy a USB to RS-232 adapter for use with my M1 Mac Mini, but this is turning out to be a lot more complicated than i thought it would be. the most common devices seem to be based on ...

Advantech’s industrial-grade isolated RS-232 to RS-422 or RS-485 converter is now available from the company’s e-store. With no change to associated computer hardware or software, the device, called ...

RS-232 communication, however, operates using asynchronous data transmission. This makes it difficult to interface RS-232 ports to MSK modems.