Even though many mobile and wireless devices are available ,there will be many more in future.There is no precise classification of these devices like the shape,size ,body.etc..the list of followin device according to there grades..like sensors,embedded controlers,pagers,etc..
SENSORS- it is used to transmit the state information,one example would be like the door sensors i.e it senses a person standing near the door and the door opens .If the person is inside the door closes down automatically ,thus it is provided along wit intelligent systems.
PAGER- it was used few years back,but was a very important device as the messages could b easily send .It was only when mobiles were discovered and pagers had no longer market exixtance.
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