notification area
A foreground program is a program that runs in the current window, and the foreground program responds first to a user's command; a background program is a program that runs when a user performs another task, and the computer's CPU assigns fewer resources to the background program than the foreground program.
The right side of the notification area will show the time. Double-click the time with the left mouse button (the icon in the notification area can be opened with the left click) to view the detailed date and time. Some of the often used icons, such as the volume control icon, Windows XP did not put it in the notification area like the previous version of Windows, and when you want to adjust the speaker, headset, microphone volume is inconvenient, let's see how to add it back into the notification area.
1. Open the Control Panel
Left-click the Start button on the taskbar or press the "Windows logo key" on the keyboard to open the Start menu, and then click the Control Panel option on the menu.
2. Select Category
Select sound, Voice, and audio devices in the Control Panel window.
3. Open "Sound and Audio Devices"
You can open the Properties window for sound and audio devices by clicking the sound and Audio Devices icon in the sound, voice, and Audio Devices window.
4. Put the volume icon into the task
In the sound and audio Device Properties window, under the Device volume bar, check the option to put the volume icon in the taskbar, and then click OK to close the property window.
5. Turn on "volume"
OK, now you can close the window by clicking the Red Fork button in the upper right corner of the voice, voice and audio device window. Then go to see your taskbar, there has been such a volume icon, click it to open the Volume Control Panel, with the mouse up and down the top of the volume adjustment button to adjust the volume.
The Volume control button can be clicked, or you can double-click it. Click to simply adjust the volume, double-click a more detailed adjustment panel, which can be a variety of audio equipment to adjust the volume balance.