Information Research Services Updated: 02 October 1997
        DECUS evolved because engineers needed a forum to share information and computer programs for DIGITAL's first computer, the PDP-1. Founded on the idea of open exchange of information between user and manufacturer, DECUS has grown to be one of the largest users' groups in the computer industry, with a total membership of about 100,000 and 23 chapters worldwide. The DECUS logo is a stylized version of the PDP-1 "TYPE 30" point scope.