Ero sivun ”Tietoliikenne/Tietoliikenteen historiaa” versioiden välillä
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==Radiopuhelin ja matkapuhelin==
'''Matkapuhelin''' sai alkunsa
<!--Käännettävää en-wikipediasta: Mobile phones have a long and varied history that stretches back to the 1950s, with hand-held devices being available since 1983. Due to their low establishment costs and rapid deployment, mobile phone networks have since spread rapidly throughout the world, outstripping the growth of fixed telephony. Such networks can often be economic, even with a small customer base, as mobile network costs are mostly call volume related, while fixed-line telephony has a much higher subscriber related cost component.-->
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