Touch screens

By Emily Stockford

the computer's main storage media device that permanently stores all data on the computer. A type of display screen that has a touch sensitive covering the screen. instead of using a pointing advice like a mouse or a light pen, you can use your finger to point directly at the object on the screen. Although some times it is very inconvenient if you are tapping on an object that is quite small and as your finger is a relatively big and so is therefore nearly impossible to point accurately to small areas on the screen. In addition some users find that after a long period of time it may be tiring to your arms.
Reality touchscreen University of Groningen

Touch-screen monitors have become more and more commonplace as their price has steadily dropped over the past decade. There are three basic systems that are used to recognize a person's touch: resistive, capacitive, surface acoustic wave