Aniedu A N, Okezie C C, Eze C E, Udegbunam E U. Keypad Controlled Dot Matrix Display. IJPRSE [Internet]. 2021 Jun. 5 [cited 2024 Jul. 3];2(6):41-5. Available from: https://journal.ijprse.com/index.php/ijprse/article/view/295