encontr esta definicin 22:17 May 29, 2004
The basic idea behind the NMEA 0183 standard is to communicate data via standardized "sentences." A data sentence is composed of data fields, the first of which is a sentence identifier. The number and type of data fields is standardized for each type of sentence. For example, all "GPGLL" sentences have four fields (latitude, North or South, longitude, East or West) in addition to the sentence ID and look something like this:
GPGLL,4806.78,N,12245.34,W
Data sentences are streamed from one device to another at periodic intervals. Each device can stream different sentences at different intervals. Receiving devices read each sentence, look at the ID, and then either discard or use the sentence. | 
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