Audichron
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The Audichron was an automated time-telling machine providing the correct time to telephone callers. It was installed in the lobby of the Alabama Gas Corporation building at 1918 1st Avenue North in 1949, with the telephone number 4-6721.
Using "sound film" and radio tubes, the machine could tell callers the correct time. The machine was capable of answering 22 calls simultaneously or 132 per minute, 24 hours a day. It also made a record of each call.
References
- "If you like nice voice telling you hour, no use to ask "date". (April 1949) Birmingham News