MOBILE PHONE
Mobile phone is useful devive to have.Mobile phone is elctronic communication device which
is use to communicate with each other.basically it was invented in back 1900s but concept of
communication devices were invented in 18th century.i don't know his first name but his sir name
was Marrconi he discovred that you can send up voice signels by boosting it by elctric currunt.
centure ago the telephonic devices were big as 2 -6 pounds heavy and very bulkey but now a days
the fir in palm of your hand and they are fast and equipted with more features such as camera,music player,calender etc.peoples have very negative thinking about mobile that it spoils
youth.technology is like a magic if you use it wisely it has very benifits but if you use it negatively
it is biggest threat to peoples.first telephone look something like this.
this the first telephone
This is Modren phone you can clearly see the diffrence in the revolution of technology
....:::A-A-K:::...
04-04-2013
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