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Telegraph
in 1793,telegraph was invented,and signals were first sent along wires. -
Telephon first trying outs
Johann Reis ,Antonio Meucci ,Elisha Gray and Alexander Graham Bell were all trying out the first telephones in the 1860s and 1870s,but Bell's was granted the first patent in 1876.
Bell's first telephones had one combined mouthpiece and earpiece.When you spoke into the horn,the voice was converted into electric signals wich were carried along telephone wires. -
Telephon with separate mouthpiece and earpaice.
In 1879,Thomas Edison made a telephone with separate mouthpiece and earpaice. -
Telephones though an operator.
In the 1880s,all telephone calls had to go through an opertaor.The operator took your number you wanted and plugged in your line to completed the electrical circuit and conect your call.It was imposible to make a private call. -
First dial phones.
The first dial phones were used by the 1920s,"cradle" telephones were popular in Europe and USA -
First mobile
The mobile phone was invented in 1979 at the Bell Telephone Laboratories in the USA.They conect the mobile phone with the computer.And the mobile phone or cell had voice messages,text messages,photos,videos,games and connect with internet.
