DIGITAL CONTROL OF EXTERNAL DEVICES THROUGH THE PARALLEL PORT OF A COMPUTER USING VISUAL BASIC. Nigerian Journal of Technology, [S. l.], v. 31, n. 3, p. 261–267, 2012. DOI: 10.4314/njt.313.552. Disponível em: https://nijotech.com/index.php/nijotech/article/view/552. Acesso em: 16 apr. 2026.