Hidayatullah MK, Siswiyanti, Tulodo RP. PERANCANGAN TONGKAT TUNANETRA SENSOR ULTRASONIK MENGGUNAKAN METODE ERGONOMIC FUNCTION DEPLOYMENT (EFD). JIETI [Internet]. 2025 Dec. 19 [cited 2026 May 16];3(2):65-7. Available from: https://journal.lenvari.org/jieti/article/view/342