In order, in a real-time system of a digital control, to prevent an individual program sequence (PS2) of a non-critical computing process ('task') from using up a load-dependently disproportionate amount of the total computing time still available, that program sequence (PS2) is classed as a subordinate computing process (R14) with a running time limit (LZF). Program sequences which should preferably not be interrupted are protected against interruption by a lock. The original running time limit (LZG) can be overcome only within predetermined limits.
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