Salung, Putri Ananda, and Sujono Sujono. “Design and Build a Library Visitor Monitoring System Based on Microcontrollers”. NEWTON: Networking and Information Technology 3, no. 1 (June 30, 2023): 7–14. Accessed November 23, 2024. https://ejournal.unwaha.ac.id/index.php/newton/article/view/3958.