EntityQ1156388· pop 22· linked from 89 articlestelegraph keySign in to saveelectrical switch used to transmit text messages in Morse codeConnectionsrepetitive strain injuryEntityYouTubeConceptBernEntityInternational Standard Book NumberEntityHarvard UniversityEntityWayback MachineEntityMorse codeEntitydigital object identifierEntityInternational Standard Serial NumberEntitySamuel Finley Breese MorseEntityAttack on Pearl HarborConceptB. F. SkinnerEntitypendulumEntitytelegraphyEntityYokosukaEntityJSTOREntityKureEntityelectronic componentEntitySaseboEntityiambEntityCategoriesAmateur radioHuman–machine interactionMorse codeTelegraphy