FirstGenerationcomputersarecharacterizedbytheuseofvacuumtubesThesevacuumtubeswereusedforcalculationaswellasstorageandcontrolLatermagnetictapesandmagneticdrumswereimplementedasstoragemediaThefirstvacuumtubecomputerENIACwasdevelopedbyUSarmyordinancetocalculateballisticfiringtablesinWWIIIthadabout17000vacuumtubes