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 ...
Fiber uses fiber-optic lines that transmit data at the speed of light, whereas cable uses coaxial cables, which are traditionally used for TV service. Fiber typically offers faster upload and download ...
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