Main Page | See live article | Alphabetical index 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). This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.