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◈ALB Atlas

AT&T Alive

AT&T
KindCompany
Founded1885
StatusAlive
FoundersAlexander Graham Bell

The Bell System parent — broken up by antitrust decree in 1984, reassembled in pieces. Its research arm, Bell Labs, gave the world the transistor, Unix, and C.

Created Bell Labs

Incorporated in 1885 to build the long-distance network, AT&T operated a regulated monopoly — 'Ma Bell' — until the 1982 consent decree split it into the Baby Bells (1984). The pieces have since largely merged back into the current AT&T Inc., legally a renamed Southwestern Bell.

For computing history, AT&T matters almost entirely through Bell Labs: the transistor (1947), information theory (1948), Unix (1969), C (1972), and the laser.