What is the use of win7 user account control?

  

What is the use of win7 user account control?

1. After entering the win7 system, click [Start]---[Control Panel];

2. Under Control Panel, click [User Account and Family Security];

3, [User Account] Click to enter;

4, change the user account control settings;

5, enter the [Change User Account Control] interface, as shown below This prompt can be cancelled.

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