Kalmar “kwamfuta linzamin kwamfuta” yawanci tana nufin ƙaramin na’urar hannu da ake amfani da ita don motsa siginan kwamfuta a allon kwamfuta da zaɓi abubuwa ta danna su. Yawanci yana ƙunshi ƙaramar na'ura mai girman dabino tare da maɓalli ɗaya ko fiye, waɗanda ake motsawa tare da shimfidar wuri don sarrafa motsin siginar akan allon. Kalmar "Mouse" ta samo asali ne daga siffar na'urar, wanda yayi kama da karamin rodent.