, D. R. P. P. J. D. R. A. A. R. B. Close Circuit Security System Using At89c51. International Journal on Recent and Innovation Trends in Computing and Communication, [S. l.], v. 4, n. 4, p. 439–443, 2016. DOI: 10.17762/ijritcc.v4i4.2030. Disponível em: https://ijritcc.org/index.php/ijritcc/article/view/2030. Acesso em: 18 jul. 2024.