telecomunications

Wireless telecommunication

1866

active voice:
1866 Mhon loomis realizes the first wireless telecommunication, pasive voice:
the first wireless telecommunication was realized by Mhon Loomis.

Telephone

1876

active voice:
1876 ​​graham bell creates the first telephone,
pasive voice:
the first telephone was created by Graham bell.

Carbon Microphone

1877

active voice:
1877 Thomas Edison design the first microphone called a "carbon microphone"

pasive voice:
the first carbon microphone was designed by Thomas Edison.

disk phone

1896

active voice:
1896-1900 Michael pupin create the disk phone,
pasive voice:
The disk phone was created by michael pupin in 1896 to 1900.

Diode

1906

active voice:
1906 Lee De Forest improves the diode, device that can detect radiotelegraficas signals,
pasive voice:
The device that can detect radiotelegraficas signals was improved by
Lee De Forest in 1906.

Telegraph

1937

active voice:
samuel morse invents the first telegraph, pasive voice:
the first telegraph was invented by Samuel Morse

digital telephony

1937

Active voice:
1937 Alec Reeves develops the modulation by encoded pulses,
pasive voice:
The modulation by encoded pulses developed by Alec Reeves in 1937.

the first computers

1943

active voice:
1943 colossus is compound of vacuum tubes and using cards,
pasive voice:
vacuum tubes and using cards is compounded by colossus in 1943.

mobile phone

1946

active voice: 1946 At & T companny shows to the market its public mobile phone system,
pasive voice:
the market its public mobile phone system is showed by At & T in 1946.

Modem

1966

active voice: 1966 AT & T designs the first modem which was called dataphone,
pasive voice:
the first modem which was called dataphone, was designed by AT & T in 1966.