how to run games on emulators

Recently we were discussed about emulators that what the work of emulator and how they help us in gamings, now the topic is how to play games on emulator, an emulator is a simple software can run the application or a game of other operating system,
for example a playstation 3 game which is unable to run on mac or pc so we use emulator of playstation 3 to run the game in windows, some of games can’t run on your operating system so that we install emulator then open the game file from the emulator and play the file on your desired operating system through emulators, it is very easy to use and very easy to run a game,

how to run games on emulators