Now you see following options and description

System and security :

               This section deals with the overall operation and 

stability/security of windows 7. 

Here, you can open the action center, check system settings, manage windows update settings and power consumption options, and access other administrative tools. 

1)Action center 2)windows firewall 3)system 4)windows update 5)power option 6)backup and restore7) bit locker drive encryption 8)administrative tools

Network and internet :-use this option to modify how your computer will interact with others it you are on a network. Manage network settings, set up and use the home group network to interact with other windows 7 computers and modify internet explorer 8 settings. 

1)Network and sharing center. 

2)homegroup 

3)internet options

Hardware and sound:-This option allows you to modify settings for all hardware connected to your computer. This can include printers and scanners, mice, keyboard, speakers,digital cameras and audio devices, game controllers,and scanners, and modems. You can also modify autoplay option for removable media, adjust sound and power usage options, and change display settings.
1)Devices and printers
2)Autoplay
3)sound
4)Power options
5)Display

Programs:-Install or uninstall third-party programs,  set which programs will be associated with which file type, and manage gadgets.
1)Programs and features
2)Default programs
3)Desktop gadgets

User accounts and family safety appearance:- Manage users on your computer. These options are useful if the computer is to be used at home or in an office setting where many people will share the same compter. Use windows card space and the credentials manager to manage personal data.
1)User account
2)parental controls
3)Windowscardspace
4)Credential manager adjust

Appearance and personalization:
Adjust the look and and feel of your computer here. Manage how the start menu looks, adjust a number of visual elements, customize how a folder display it's contens,and view fonts that are installed on your computer.
1)Personalization
2)Display
3)Desktop gadgets
4)Taskbar and start menu
5)Ease of access center
6)Folder options
7)Fonts

Clock, Language, Region :- Use this option to change the data and time,  change the language pack that is installed on your computer,  or change other regional options such as currency and number formats.
1) Data and Time
2) Region and Language

Navigation Basics 
When you open the Control Panel,  all of the primary categories of options are listed in green,  with the most commonly used category options in blue. For example,  consider the Hardware and Sound option:

When you click a category,  a navigation pane will appear on the left side of the window.  This pane shows you where you are in relation to the other categories.  Notice that the address verification now shows the category name as well:

Clicking 5he actual Hardware and Sound link will open all category options,  as shown in the diagram below.  If you clicked the blue "Add a device " link,  you would be taken directly to the sub option in the red box: 

Sometimes when you have clicked a link to view the details of a category or clicked a sub option,  you will see some related Control Panel options :

Beside the address bar at the top of the window are Back and Forward navigation buttons.  You can also return to the home screen of the Control Panel by clicking Control Panel Home :

This will list all commands that do a specific thing with your computer.  (You may more or fewer icons on your computer.)