Wisana IDGH, Nugraha PC, Rachman RA. Development of a Low-Cost and Efficient ECG devices with IIR Digital Filter Design . ijeeemi [Internet]. 2025 Aug. 17 [cited 2026 Apr. 19];3(1):21-8. Available from: https://mail.ijeeemi.org/index.php/ijeeemi/article/view/194