Foreword to The Hands-on XBee Lab Manual
The late 20th century saw the birth of connectivity. From simple computer networks the Arpanet grew into the Internet. At first the playground of academics, nearly everyone is now connected to the “net” and therefore to everyone else and to vast amounts of data.
The 21st century has seen the dawn of the wireless era. Cell phones are no longer telecomm devices; they’re part of the vast Internet. Now we’re all connected all of the time, in the office or at the beach. Some of us use a smart phone more for data communications that voice transmissions. Indeed, that mobile device may have four or more antennas: one with a link to satellites in space for navigation, another to the 3G network, a wi-fi connection ...
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