[Robert’s Retro] is one of those great YouTube channels that shows us the ins and outs of old and obscure computers. [Robert] likes going a step beyond the traditional teardown though, repairing and ...
Targeting serial-intensive applications, the SIO-104+8.485 eight-port PC/104 RS-485 module conforms to PC/104 specifications and includes UARTs with 128-byte FIFOs for communication speeds up to 921.6 ...
A computer’s serial port is a convenient source of low-speed dc control signals that are easy to set from software. For example, the RTS (request-to-send) line outputs about +9 V when “on” and -9 V ...
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