NASA NTRS · 20080008805
Backup control system (BUCS)
Abstract
A backup software program is installed in an isolated portion in the memory of at least one of redundant computers. The backup program performs basically the same functions as the prime program but is dissimilarly programmed to prevent a common software error. Switchover to the backup program occurs either automatically in response to monitors, or manually by the operator (i.e. pilot) when he detects an anomaly.
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Murphy, Richard D., Fischer, William C.. 1989-12-26. Backup control system (BUCS). https://ntrs.nasa.gov/citations/20080008805
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