what is the difference in programming between real-time and multi-task

[Adwa,Liu]

as title

Further reading material is welcome!

Thank you

[Adwa,Liu]

Notice

[rchang]

Real time means your application receive event ( interrupt driven ) in a deterministic time ( or guaranteed event latency or no longer than say 10ms ).

A reference :
http://www.dedicated-systems.com/mag...998q3_p064.pdf

Use www.google.com to search "real time kernel" for more informations.

[proxima centaur]

Real time means that the operation on your system are time critical, for example, a system monitoring the suspension on a car. All the operations should take the least time possible to allow interrupt or event to call the routines with the shortest delay possible.

Multi-thread means that two or more processes can run at the same time, but they could be very time consuming. For example, you might want to calculate a Fourier Transform while doing a SQL search on a very large database. The two task will use the processor one after the other, but each task performed can take a long time and thus does not qualify to be a real time application.

Hope that helps