More on NMEA-0183 and GPS?

If you’d like a more detailed view on things like NMEA-0183 and GPS, have a look at Peter Bennett’s website.
“The NMEA 0183 Interface Standard defines electrical signal requirements, data transmission protocol and time, and specific sentence formats for a 4800-baud serial data bus. Each bus may have only one talker but many listeners.”
“The National Marine Electronics Association has introduced the long awaited NMEA 2000 interface standard. The standard contains the requirements of a serial data communications network to inter-connect marine electronic equipment on vessels. It is multi-master and self configuring, and there is no central network controller. Equipment designed to this standard will have the ability to share data, including commands and status with other compatible equipment over a single channel.”