Ferry Yoga Pratama, Miftachul Ulum, Haryanto, Deni Tri Laksono. Design of an Alphabet to Braille Letter Conversion Board Android based. joincs [Internet]. 2021Apr.29 [cited 2024Nov.21];4(1). Available from: https://joincs.umsida.ac.id/index.php/joincs/article/view/1576