Real-Time Systems
Often used as a control
device in a dedicated application such as controlling scientific experiments,
medical imaging systems, industrial control systems, and some display systems.
Well-defined fixed-time
constraints.
Real-Time systems may be
either hard or soft real-time.
Hard real-time:
Secondary storage limited or absent, data
stored in short term memory, or read-only memory (ROM)
Conflicts with time-sharing systems, not
supported by general-purpose operating systems.
Soft real-time
Limited utility in industrial control of
robotics
Useful in applications (multimedia,
virtual reality) requiring advanced operating-system features.
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