Touch-screen is useful and convenient to use, but they also have a few disadvantages.
When you use touch-screen you have to be close to the screen in order to touch it. If you prefer to use mouse you can be as far as possible. With a mouse you are able to click every icon on your desktop. However, you might have difficulty in clicking small icons on your touch-screen with your finger. Since finger may be much bigger than the icon and two icons might be clicked at once with finger. Another disadvantage of touch screen is the display dirties up frequently because of touching it with filthy fingers. And typing on touch screen is more difficult than on a keyboard.
On the other hand touch screen does not occupy a lot of room on your table. Because you do not need to have mouse or keyboard which takes up much place. Also, it is much faster to use your finger rather than mouse when you are clicking icons. And you can put cola or some food on your table not worrying about spilling cola on the keyboard. Touch screens have a quick access to any types of digital media.
In spite of some troubles, I prefer ot use touch screen because it is easy, fast and convenient to use.
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