BBS access is limited to phone lines until the early 1990s. February 1978 – Ward Christensen's CBBS becomes the first Bulletin board system.1976 – Xmodem a point-to-point binary transfer protocol by Ward Christensen.Comparison of Internet Relay Chat clients.( Learn how and when to remove this template message) ( June 2016) ( Learn how and when to remove this template message) Please improve this article by removing excessive or inappropriate external links, and converting useful links where appropriate into footnote references.
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