Question

Difference between fixed time step and event to event model

Answer 1

Fixed time-step model

In this the timer simulated by the computer is updated at a fixed time interval. The system is checked to see if any event has taken place during that interval. All the events which take place during the time interval are considered to have occurred simultaneously at the end of the interval.

 

Event-to-event model

It is also known as the next-event model. In this the computer advances the time to the occurrence of the next event. So it shifts from one event to the next event and the system state does not change in between. A track of the current time is kept when something interesting happens to the system.

Answer 2

Fixed time step model:
In this model computer simulated a timer , a fixed time interval in set according to which timer is updated. After that every event happening during that time period is inspected and all the event are considered to be occur at the same time during that interval.

Event to event model:
It this type of model occurrence of the next event is find and computer advances the timer according to that.So, On happening of something interesting to the system the time of occurrence or current time is noted.