BUTTON BASED VOICE AND TEXT DISPLAYING UNIT FOR SPEECH IMPAIRED (DUMP) PEOPLE. International Journal of Engineering Research and Science & Technology, [S. l.], v. 22, n. 1, p. 353–357, 2026. DOI: 10.62643/. Disponível em: https://ijerst.org/index.php/ijerst/article/view/1808. Acesso em: 28 jul. 2026.