"alc.." YourDictionary, n.d. Web. 12 October 2018. <http://www.yourdictionary.com/alc>.
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alc - Computer Definition
An IBM protocol used in airline reservations systems such as American Airlines SABRE System and United Airlines APOLLO. Both ALC and P1024B, the Unisys version, employ a de facto standard six-bit coding scheme. See also coding scheme, standard, and protocol.