Osciloscope Simulator is an app that simplified designed to help teacher to give the explanation about how to read Osciloscope scale screen. With this app, user or student can easily learn how to do the mesurement the large or wave periode of voltage that detected by Osciloscope. User can also learn how to find the right setting of div button to get the right view on screen. To use this app, student must be guided by teacher or laboratory assistant, to give more explanation and compare with the real device on laboratory. Student or user can also study by herself, when he ever do measurement with the real device and real case. So this app, it's just virtual media that can be use and developed by the teacher himself Present to you, by Computational Lab., Dept. of Physics, UB