Lecture 1 Flashcards
What is a real time system
It is one that must meet explicit deadlines or risk system failure. A real time system that doesn’t meet deadlines is just as useless as a system that does not perform the correct functionality.
What is the response time of a system?
It is the time between a set of inputs to a system and the corresponding set of outputs.
What is throughput?
The number of responses of a system per unit time.
What is Jitter?
The timing variation through a system
What is Hard Real Time?
Missing a deadline will cause complete system failure with potentially fatal consequences.
What is firm real time?
Missing the deadline will render the results useless but the system can deal with it.
What is soft real time?
Missing the deadline is acceptable but can degrade the system quality.
What is determinism?
A system is deterministic if for each possible state and set of inputs, the output and next state of the system can be determined. It will always provide the same output for the same set of inputs.
