Monday 24 September 2012

Real-Time Systems

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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