mahardhika, P., and A. Haris Kuspranoto. “DESIGN OF COUNTDOWN TIMER SIMULATION ON MEDICAL DEVICES BASED ON ARDUINO UNO AND WOKWI SIMULATION”. MEDIKA TRADA : Jurnal Teknik Elektromedik Polbitrada, vol. 5, no. 1, June 2024, pp. 5-10, doi:10.59485/jtemp.v5i1.41.