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First experimental acoustic (telephone)
Electromagnetic telephones, mechanical acoustic devices used to transmit speech and music over a distance. -
Semaphore lines
Line of stations which was used to convey textual information by means of visual signals. -
Signal lamps
Visual signal device for optical communication which is using morse code. The signals are made from opening and closing shutters in front of the lamp. -
Telephone
A device which is used to transfer sound through long distance. Telephone converts voices and sounds into electronic signals which are transmitted using cables. -
Acoustic phonograph
Acoustic phonograph records and reproduces the sound . It is also known as the gramophone, it records the sound vibrations. -
Optical picture / television
Television is a telecommunication medium used to transmit moving images in monochrome or in color with sound. -
Computer networking
A telecommunication network that allows computers to connect and share information and resources. -
First mobile phone
A portable telephone which allows people to communicate between each other on a distance and without using any cables. A wireless and pocket device. -
internet
A global system of interconnected computers that uses internet protocol suite. Internet is a global network that allows computers to connect and share information. -
Mobile satellite hand-held phones
A system that connects phones and telephones using radio and satellite signals.