Perancangan Alat Absensi Berbasis Arduino Uno Di PT. Telkom Akses Pematangsiantar. Device, [S. l.], v. 11, n. 2, p. 5–12, 2021. DOI: 10.32699/device.v11i2.2042. Disponível em: https://ojs.unsiq.ac.id/index.php/device/article/view/2042. Acesso em: 8 dec. 2025.