Ma'anar ƙamus na kalmar "binary digit" lambobi ne a tsarin lambar binary, wanda shine tsarin lambobi na tushe-2 wanda ya ƙunshi lambobi biyu kawai, 0 da 1. A cikin kwamfuta, lambar binary, ko "bit" “a takaice dai, ita ce mafi kankanta na bayanan da kwamfuta ke iya sarrafa su, kuma ana amfani da ita wajen wakiltar ko dai 0 ko 1. Tsarin binary ana amfani da shi sosai a fannin kimiyyar kwamfuta da na’urorin lantarki, domin yana samar da sauki da inganci. hanyar wakilci da sarrafa bayanai ta amfani da ƙima guda biyu kawai.