| http://www.w3.org/ns/prov#value | - FIG. 3 shows computer system 150 including display device 153, display screen 155, cabinet 157, keyboard 159 and mouse 161. [0052] Mouse 161 and keyboard 159 are ???user input devices.??? Other examples of user input devices are a touch screen, light pen, track ball, data glove, etc.
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