[Android Q&A, Help & Troubleshooting] stempox:
It 'just a habit of many displaying applications in the background to go on the Android Market and install a task killer for fear that some application in the background throughout the battery consumption and slow down the phone memory consuming.

First Step

Android is the son of Linux and not Windows, Windows programs make sense that clean and optimize your memory, not in linux and behaves the same way if you have 10 or 100MB of free memory.

How to manage Android applications

Android applications and processes have defined 3 stages:

1) Running

2) Break In

3) Stopped

Each application runs in its own process when Android starts the process need to be made and ends when no longer needed, it lives in its own world and its code running is isolated from the rest with a Virtual own machine, it is assigned an ID whose permissions are visible to the user and 'application.

If an application needs to share files with another application creates a unique ID to save memory with a single Virtual Machine she shared.

Services are active as long as they need as well as activities that require the data connection and every process of Android. To understand whether an application or any process needs to connect and see if there are updates that it is active so that makes this operation.

It is not good or terminate these operations because the process will start all over again immediately active or when we are going to open an application it will take longer to open.

All processes are terminated when there is no longer needed or when the memory required by other processes.

If a user leaves a task for a long time, the system deletes all activities except the root, and when the user returns to the task it is like you had left.

An application is running when in fact you're running and is the first system plan

When it is no longer at the center of the 'attention but can still be visible is paused and can be killata by the system in case of need for extreme lack of memory

Finally, the application is blocked, but retains all the information is no longer visible on the screen and is in the background, can be killata from Android for any other activity that requires memory.

Summing Android is designed to kill the tasks when

You need more memory

They finished their work

Are not used for a long time

Kill process "by hand" can lead to side effects such as non-receipt of messages, slowdowns, crashes, etc. widget

The majority of applications closes with the BACK button and in any case by pressing the HOME Android close the task after it has been in the background for a certain period of time.

The majority of services running in the background using very little memory when they are not doing something so all other processes (reporting, etc.)

Domada: But why do I open google maps, facebook etc. mail.

These programs are not actually "open" if you notice are all programs that need a network connection, when you turn on the phone they do nothing but check for updates and notifications and then close.

If these activities killiamo happens that most of them will re-open to start all over again or take longer to open when we need them, or worse, will not give us accurate and up to date or will not work properly as well as make a lot more processor.