Go to System Preferences, then Displays, then the resolutions are listed on the right. The highlighted choice is the resolution of your monitor. To choose a different one, just click on a different resolution.
Answering "Why does your computer keep changing the screen resolution in vista?"
The best resolution to be used for ones computer screen is 1024 x 768 as computer screens are getting larger, the larger the resolution the better the visual data.
To determine the resolution of an image, you need to look at the number of pixels it contains. Resolution is typically expressed as the width and height of the image in pixels, such as 1920x1080. The higher the number of pixels, the higher the resolution and the clearer the image will appear.
Resolution of image is used to determine the quality of image in digital camera.
Resolution is the screen size (monitor). There are different types of monitors which are different size screens (resolution).
The screen resolution is determined by the monitor not the desktop.
To determine if an image is high resolution, check the image file's dimensions and resolution settings. High resolution images typically have larger dimensions (e.g. 3000 x 2000 pixels) and a higher resolution setting (e.g. 300 dpi). You can also use image editing software to view the image properties and check the resolution details.
the smallest unit of resolution on a computer screen
To determine the image resolution, you can check the image file properties or use an image editing software to view the dimensions in pixels. The resolution is typically expressed as width x height in pixels, such as 1920x1080 for a Full HD image.
They are higher resolution.
Some computer games have a set resolution for that game. Most of the time it is lower then the resolution of your screen so it has to automatically adjust for best game play performance. You can change these settings in the in-game settings.
The measurements used to determine a monitors screen resolution is Pixels per Inch (PPI). The size of a monitor in inches and the total pixels in the horizontal and vertical directions determines the PPI of the screens resolution. For Example a 15 inch monitor has a maximum of 1024x768 pixel resolution.