- S. SISTEM KUNCI ELEKTRONIS DENGAN PEREKAM WAKTU AKSES BERBASIS MIKROKONTROLER AT89C51. TECHNOSCIENTIA [Internet]. 2009 Feb. 1 [cited 2024 Oct. 5];1(2):266-73. Available from: https://ejournal.akprind.ac.id/index.php/technoscientia/article/view/404