Hard real - Time system :-
1>Strict about each task and its deadline.
2>the preemption period (the delay it can handle max ) should be very less . (in range of micro second)
3> Rocket launching
Soft Real Time system :-
1>The task and its deadline is manageable but we should met the condition most of the all the time.
2>the preemption period for this can be more (around mili second )
3> Example :- camera and washing machine etc