Design and Development of a Low Cost Smart Electronic School Bell. International Journal of Latest Technology in Engineering Management & Applied Science, [S. l.], v. 13, n. 9, p. 131–135, 2024. DOI: 10.51583/IJLTEMAS.2024.130913. Disponível em: https://www.ijltemas.in/index.php/online/article/view/876.. Acesso em: 21 nov. 2024.