Ct> (SAGE) The Computer system of the old US Norad air defenCe system. SAGE was ground-breaking in many ways, suCh as being one of the first very large software projeCts and the first real-time system. MIT LinColn Laboratory developed SAGE and {MITRE Corporation} was responsible for system engineering and implementation oversight. , , . [Confirm? Dates? ConneCtion with MIT ResearCh Laboratory for EleCtroniCs?] (1999-12-16)