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30,000 BCE
rock art
The oldest known symbols created for the purpose of communication were cave paintings, a form of rock art, dating to the cave paintings. The oldest known cave painting is located within Chauvet Cave, dated to around 30,000 BC. These paintings contained increasing amounts of information: people could have created the first calendar as far back as 15,000 years ago.
https://en.wikipedia.org/wiki/History_of_communication -
3000 BCE
writing
The first writing system is generally believed to have been invented in pre-historic Sumer. The original Sumerian writing system was derived from a system of clay tokens used to represent commodities.The original Sumerian writing system was derived from a system of clay tokens used to represent commodities.By the end of the 4th millennium BC, this had evolved into a method of keeping accounts.
https://en.wikipedia.org/wiki/History_of_communication -
911
newspaper
The prototype of the newspaper is the ancient handwritten newsletters. Even Julius Caesar began to publish the "Acts of the Senate", and then "The Daily Public Acts of the People." The Roman newspapers were clay tablets on which a chronicle of events was recorded. Around 911, "Jin Bao" ("The Metropolitan Herald") began to appear in China.
https://ru.wikipedia.org/wiki/Газета -
phone
Alexander Bell received a patent for the invention of the phone. It is interesting that Alexander Bell tried to invent not a telephone, but a "harmonic telegraph". At that time, telegraphy experienced a huge shortage of lines.
https://ru.wikipedia.org/wiki/Телефон -
radio
A.S. Popov, repeating Hertz's experiments with electric waves, perfected the devices so that in 1889, rather strong sparks began to appear in his receiving resonators. And already in 1894 Popov built a receiver, quite sensitive to electric waves, the principal features of which have been preserved in radio equipment up to now.In 1912, the radio helped save hundreds of people from having time to send a "SOS" signal to the "Titanic".
https://www.proza.ru/2012/03/18/1478 -
computer
The world's first computer was an American programmable computer, which was designed and built in 1941 by Harvard mathematician Howard Eixon in collaboration with four IBM engineers, for which the computer was designed.The cost of this computer was 500 thousand dollars. "Mark 1" was the very first automatic computer, which did not require human intervention for carrying out work processes.
http://antonkozlov.ru/istoriya/samyj-pervyj-v-mire-kompyuter.html -
IRC
1988 presented IRC technology, that is, a retransmitted Internet chat that connected users and let them communicate in real time. The creator of the IRC was a 20-year-old Finnish student Jarkko Oikarinen (Jarkko Oikarinen).So there were instant messaging systems.
http://miolaweb.ru/biznes-uroki/istoriya-vozniknoveniya-i-razvitiya-socialnyx-setej/
