Qalabka kontoroolka bilowga ah ee motoorka caqliga leh ee khadka tooska ah waa wax soo saar heer sare ah oo si gaar ah loogu horumariyay bilowga, joojinta iyo ilaalinta matoorada dabaqa ee saddex-waji asynchronous, oo leh qalab wareeg ah oo ku dhex jira (ikhtiyaar), hawlo dhamaystiran, hawlgal fudud.