This video is all about the function call subsystem.
it is not always necessary to call a subsystem which will save a lot of execution time for the model.
in such scenarios we can use a function call subsystem. when any even happens in the model this subsystem will be called and the execution take place in the subsystem.
in this tutorial we have taken the airbag deployment system in to consideration. as soon as an event like crash happens the subsystem gets activated and the airbag deployment happens.
the design in the model is kept simple for a better understanding of function call subsystem.
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