BBS (Bulletin Board System) are amateur telematic systems consisting of a PC, managed by a private individual called sysop, with an interface program for external connections via modem.
The first BBS was created in 1978, and it was CommuniTree BBS in Santa Cruz (USA). A BBS is therefore a service, accessible via modem, that functions as a centralized information source for files, programs, and messages where each user can leave messages for all other connected users and discuss problems and doubts together. The spread of the internet in the late 90s supplanted and slowed down the BBS phenomenon.
Usenet
A network composed of thousands of newsgroups (public discussion forums, accessible with programs called newsreaders, which allow reading messages sent via email by other users and responding), each dedicated to a particular topic. Usenet officially originated in 1981 thanks to two teenagers from Berkeley, Mark Horton and Matt Glickman, who created, based on an already used system, a program capable of managing a larger volume of messages. Today, the term Usenet designates over 13,000 newsgroups. Originally, the groups were all absolutely free; in 1984, those with moderators also appeared.
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