Acronym for Digital Equipment Corporation
They made VAX machines during the 1980's (and 70's maybe?) which were widely used - both WaikatoUniversity and CanterburyUniversity still have VAX mainframes in service. VAX's can run unix or Digital's Command Language (DCL).
Also made Alpha machines.
DEC were eventually bought out by Compaq.
correct me if I'm wrong, but I understood DCL was the shell and VMS was the OS.. - zcat
