1.

Define scanner, track-ball and web camera

Answer»

A scanner is a DEVICE that captures images from photographic PRINTS, posters, magazine pages, and similar sources for computer editing and display. Scanners come in hand-held, feed-in, and flatbed types and for scanning black-and-white only, or color.


A trackball is a computer CURSOR control device used in many notebook and laptop computers. The trackball is usually LOCATED in front of the keyboard toward the user. Essentially, the trackball is an upside-down mouse that rotates in PLACE within a socket.


A webcam – short for 'web camera' – is a digital camera that's connected to a computer. It can send live pictures from wherever it's sited to another location by means of the internet. ... a light that, when on, will let you know that the camera is in use.



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