Practical UML Statecharts in C C++ Second Edition

Almostallcomputersystemsingeneral,andembeddedsystemsinparticular,areeventdriven,whichmeansthattheycontinuouslywaitfortheoccurrenceofsomeexternalorinternaleventsuchasatimetick,anarrivalofadatapacket,abuttonpress,oramouseclick.Afterrecognizingtheevent,suchsystemsreactbyperformingt