This article will provide a brief description of emulators. Before running the Android applications on an actual Android device, the user can perform a test run of these apps virtually on this emulator. Do not get scared of the word emulator, it’s a piece of a program that imitates the other device’s architecture. The Android emulator is also called an Android virtual device, which is used to test Android applications on PC. 2 How to install Android emulators on PC:.