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The most useful tool provided with the Android Software Development Kit (SDK) is the emulator. Developers use the emulator to quickly develop Android applications for a variety of hardware. This Quick-Start Guide is not a complete documentation of the emulator commands. Instead, it is designed to get you up and running with common tasks. Please see the emulator documentation provided with the Android SDK for a complete list of features and commands.
The Android emulator is integrated with Eclipse using the Android Development Tools Plug-in for the Eclipse integrated development environment (IDE). The emulator is also available within the /tools directory of the Android SDK and you can launch it as a separate process. The best way to launch the emulator is by using the Android Virtual Device Manager.