First Bulletin Board System (BBS) Created in Chicago

the first public Bulletin Board System (BBS) was created by Ward Christensen and Randy Suess in Chicago, Illinois, establishing one of the earliest online messaging communities accessible by personal computer users via telephone lines.The system, known as the Computerized Bulletin Board System (CBBS), was developed during the severe Chicago blizzard of January 1978, when Christensen and Suess began discussing ways for members of their local computer club to communicate electronically. At the time, personal computing was in its early stages, and most communication among hobbyists occurred through in-person meetings or printed newsletters. CBBS ran on a home computer connected to a modem, allowing users to dial in over standard telephone lines. Once connected, users could post public messages, leave private messages, and upload or download files. The system officially went live on 16/02/1978 after testing and setup were completed. It operated from Suess’s home in Chicago and was available to anyone with a compatible modem and the correct phone number. The software written for CBBS introduced foundational features that later became standard in online communities, including message threads, user accounts, and file sharing. Christensen also developed XMODEM, a file transfer protocol that became widely used in early modem communications. Throughout the 1980s, thousands of independent BBS systems were established across the United States and internationally. These systems enabled discussion forums, software exchange, and multiplayer text-based games, forming decentralized digital communities years before the widespread adoption of the public Internet. CBBS remained operational for several years and is widely documented as the first public dial-up bulletin board system. Its creation on 16/02/1978 is frequently cited as the starting point of the BBS era in personal computing history.