Saputra S, Aswardi A. Rancang Bangun Absensi Elektronik Berbasis Mikrokontrolller Atmega328. INVOTEK [Internet]. 2018Jul.5 [cited 2026Jul.10];18(1):75-82. Available from: http://invotek.ppj.unp.ac.id/index.php/invotek/article/view/247