The main advantage is that you won't lose image quality. If you use a different resolution, the monitor has to convert it to the native resolution. That isn't too bad if the aspect ratio is the same and the selected resolution can be evenly converted. But if it is not, the image will be distorted. If you display at less than the native resolution, the monitor will have to choose to either convert to its native resolution, and distort the image and lose quality in places, or it just won't fill the screen and you end up with a small image that won't fill the screen. So the advantages are that you will get to keep your aspect ratio, the image properly fills the screen, and you avoid having a distorted image that loses pixels in places.
Presumably you're talking about a laptop. There's a setting in the BIOS of most laptops called LCD Panel Expansion. If you enable that it will make the image full screen. If it's a desktop then you've somehow managed to change the CRT focus to a smaller area, just expand it to fill the screen again. If it's a TFT monitor then it should have a button which can auto-center the image.
The monitor needs to be set up. Most have controls to set up the height, width and screen positioning.
You simply go to Paint and click on the fill tool and select the color black. Then fill in the whole screen black. It's not the best mirror but it'll do.
To make an image all black, you can use photo editing software to adjust the brightness and contrast settings until the image appears completely black. You can also use a "fill" tool to color the entire image black.
When a 4 : 3 image is displayed on 16 : 9 display, there are a number of ways to display the image. The way it is displayed is usually adjustable in the television's set up menu. To show the complete image, the height of the image will fill the screen. The left and right edges will be left blank. To fill the width, the image can be increased in size so the top and bottom of the image will be lost. Some televisions have set up adjustments to allow the image to be moved up and down to recover upper or lower parts of the image. That can be useful for programs such as sports coverage where the scores and clocks are at the top of the image, for example. The menu setting will be seen as "Zoom" and possibly an additional control of "Move" The image can be stretched so that the 4 : 3 image will fill a 16 : 9 screen. The result is that the whole image is wider than it was originally. The menu setting is normally "Stretch". Sometimes the amount of stretch might be adjustable.
Left click your desktop background it will say graphic options or properties click that and click on desktop background then it will show you pictures of what image you can have for your background desktop. To have it fill the whole desktop there will be options center,tile,stretch or left right. Click on center and it will fill your whole desktop screen.
Widescreen television formats have made an appearance in recent years. In Europe, widescreen (16 : 9 format) has been used widely for a number of years using standard definition broadcasting while in North America, widescreen has only been used with high definition broadcasting. In both cases, the change of shape has to be handled. All widescreen televisions will have their own way to deal with a 4 : 3 ratio image. The simplest method is to center the image on the screen and leave side curtains (black or gray areas) to fill the remainder of the screen. Most will allow the image to be stretched to fill the screen with the result that all images are mis-shapen. The last common method is to enlarge the whole of the image so that the width of the image fills the screen and the top and bottom of the image are lost. Some televisions allow the image to be panned to bias the zoomed image towards the top or bottom depending on the content. Broadcasters often have to cope with the same issues. Although the channel might be broadcast in widescreen, some of the content may still be 4 : 3. The image will be handled in the same ways as a domestic television but it is important to note that if side curtains are added to the image, the output is still in the wide screen format and the image cannot then be resized on the domestic television. In standard definition widescreen, a "wide screen signal" is used (WSS) within the television signal to tell the receiver what format the image is in. It is this WSS signal that is detected to establish what shape of image the television needs to use. WSS is never used in high definition as all HD images are widescreen.
In the same place you fill your front one.
Slide > Background > Fill Effects > Image > (Find your image) > "Return" three times. That's the "hard" way, but the background will not shift from slide to slide. The fast way is to insert an image as you would clip-art, then size it to fit the screen and use "Send to Back."
If you mean how do you save a particular image, just click on 'file' on the menu-bar at the top of the screen. Select 'save' - this will drop down another menu, select 'save image' and fill in the details in the new box that pops up.
The number of times in one second that an electronic beam can fill the screen with lines from top to bottom is known as the refresh rate. This value is typically measured in Hertz (Hz) and indicates how many times per second the image on the screen is refreshed. Common refresh rates for electronic displays range from 60Hz to 240Hz.