73 a ability also an and applicable arbitrary are arithmetic as assisted automatically be but called can carry computer computers connects consumer control controls design device devices factory follow for general in includes industrial instructed internet is it like logical make microwave millions mobile of on operations or other out ovens personal program purpose range remote robots run sequence set simple smartphones special such systems tasks that the this to used variety very wide acomputerisadevicethatcanbeinstructedtocarryoutanarbitrarysetofarithmeticorlogicaloperationsautomatically.theabilityofcomputerstofollowasequenceofoperations,calledaprogram,makecomputersveryapplicabletoawiderangeoftasks.suchcomputersareusedascontrolsystemsforaverywidevarietyofindustrialandconsumerdevices.thisincludessimplespecialpurposedeviceslikemicrowaveovensandremotecontrols,factorydevicessuchasindustrialrobotsandcomputerassisteddesign,butalsoingeneralpurposedeviceslikepersonalcomputersandmobiledevicessuchassmartphones.theinternetisrunoncomputersanditconnectsmillionsofothercomputers.