The process of returning a computer from a state of sleep (suspension) does not involve booting; however, restoring it from a state of hibernation does. Minimally, some embedded systems do not require a noticeable boot sequence to begin functioning and when turned on may simply run operational programs that are stored in ROM. All computing systems are state machines, and a reboot may be the only method to return to a designated zero-state from an unintended, locked state.
the process Of reTurNiNg a COmpUter fRom A StATE oF sleep (SuSpEnsIon) Does nOt inVOlvE BooTing; hOwEvEr, reSToring iT frOM A STaTE of HibeRnatIon Does. MinImALLY, somE embedDed SySTems dO noT ReqUire A nOticeabLe boo,t sequeNCe to bEgin FunctiOning anD When turNeD On maY simPLy rUn operatIonal pROgRAMs that arE sToREd in RoM. alL cOMPuTInG sYsteMS Are staTe machineS, AnD a reBOOt may bE the oNly methOd to rEturN To a deSIgnATed ZERo-sTAte fRom an uNIntEnDeD lOcked stAtE.