The screen resolution should be sufficient to render sign language and enable accurate lip-reading. At least 176x144 pixels and preferably 352x288 or more pixels.
For web publishing, what matters is screen resolution, not screen size! In the PC World, the screens usually take the size of 14", 15", 17", and 19" inch. There are 3 main screen resolutions: 640x480, 800x600, 1024x768 pixels. Usually 14-15" computers take on a 800x600 resolution, and larger screens use higher resolution, but this is NOT always the case ( e.g., my old 14" monitor can display up to 1024x768 pixels).
The screen resolution or number of pixels in the viewing window affects the way the web page appears. Images and text have their dimensions ultimately specified in terms of pixels regardless of what’s being used to view them. The greater the number of pixels, the finer the resolution. An image on a screen with a resolution of 1024 by 768 pixels will generally look better and be sharper than an image on a screen with a resolution of 800 by 600 pixels or 640 by 480 pixels. So an image that’s 300 by 400 pixels, say, will appear much smaller on a screen whose resolution is 1024 by 768 pixels than it would appear on a screen with a resolution of 640 by 480 pixels. Furthermore, the size of the browser window can be changed by the user. So as you design a page you need to think about what it will look like on different types of monitors and with different user configurations. A middle-of-the-road approach would be to design a web page so it looks good on a monitor that displays at least 256 colors and has a resolution of 800 by 600 pixels. Compromises have to be made, because it’s impossible to predict the type of monitor used and the way the web browser options are set.
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