I’ll be honest: Cable modems aren’t glamorous technology. In fact, you probably haven’t thought about yours since it was installed. It’s easy to forget how important, and impressive, your cable modem ...

The device shown in Figure 17-1 is an RS-232–to–TTL converter board, designed to allow a PC with a serial (RS-232) port to communicate with a device that has a console (TTL) port. External converters ...