UNIVAC 490

The UNIVAC 490 was a 30-bit word core memory machine with 32K words; 4.8 microsec cycle time made by UNIVAC.

Various customers used this machine type - principally airline reservations systems at Eastern Airlines (1963) and British European Airways (BEACON - 1964).

The standard Operating System was REX (RealTime Exec), except at Eastern and B.E.A. where a custom operating system was developed for airline reservations (CONTORTS - CONTrol Of Real Time System). CONTORTS was the origin of Univac's subsequent RT operating systems for 494 (STARS) and later converted to 1100 Series (RTOS).