Use APKPure App
Get 555 Timer Project Free old version APK for Android
이 응용 프로그램은 555 타이머 회로의 예를 제공
This application provide the circuit for 555 Timer IC .It can be use for student or engineer as an reference when use 555 Timer.Not just that it also can be combine with your electronic projects and circuits .This application do not need internet to working.Thank you