Google Android can have a few background proccesses running after using your Tablet or Smart Phone for a long period of time. This is because some Apps like browsers, games, media players, are also open in the background, but you do not realize it because Android does not have a task bar, or system tray for displaying what is open when programs are minimize/hidden when you hit the home screen.
Task Managers like Free Advanced Task Manager are also useful if you can't find the exit/close button, or App which is playing music or video in the background, so you can continue with your work without being interrupted.
You can usually just use a Task Manager in Google Android Gingerbread and higher by going to the settings > Applications> Running Applications. Running Applications will display a list of running Applications which are usually safe to end if you want to. If you ended a system application which you want running, all you need to do is restart your Tablet or Smartphone by powering it off and powering it on again, and it would restart.
Some 3rd-party apps may also start up by default when you start your Google Android phone or Tablet, and you won't know unless you look in the settings for the program, or use the Task Manager in Google Android to find out what is running during start up. 3rd party apps which load during startup can cause slow downs for your tablet or smartphone if the App use lots of RAM and CPU cycles.
