UNIVAC EXEC II
EXEC II is a discontinued operating system developed for the UNIVAC 1107 by Computer Sciences Corporation while under contract to UNIVAC to develop the machine's COBOL compiler. They developed EXEC II because Univac's EXEC I operating system development was late. Because of this the COBOL compiler was actually designed to run under EXEC II, not EXEC I as specified in the original contract.
EXEC II is a batch processing operating system that supports a single job stream with concurrent spooling.
