MAHAMAD, Abd Kadir; SIDEK, Azmi; SAON, Sharifah. Electronic Abacus (e-Abacus) using FPGA Altera DE2 Board. International Journal of Integrated Engineering, [S. l.], v. 11, n. 8, p. 11–18, 2019. Disponível em: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/2704.. Acesso em: 18 jul. 2024.