Ma'anar ƙamus na kalmar "binary code" shine tsarin wakiltar bayanai ko bayanai ta amfani da lambobi biyu, yawanci 0 da 1, don wakiltar kunnawa da kashe jihohi a cikin tsarin kwamfuta. Lambar binary ita ce ginshiƙi na kayan lantarki na dijital da ƙididdiga, kuma yana ba da damar adana ingantaccen aiki da sarrafa bayanai a cikin na'urorin lantarki. A cikin lambar binary, kowane lambobi, ko bit, yana wakiltar ƙarfin 2, yana ba da damar yin ƙididdige ƙididdiga tare da jerin ayyuka masu sauƙi.