In modeling and simulation, a task that consumes time and resources and whose performance is necessary for a system to move from one event to the next. [IEEE]
Ekufuziseleni kunye nakwimfaniso, umsebenzi otya ixesha kunye nezibonelelo ezinomsebenzi obalulekileyo ukwenzela ukuba inkqubo isuke kwisiganeko esinye iye kwesilandelayo. [IEEE]