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output devices ![click to hear : output devices click to hear : output devices](../../images/speaker-vert.gif)
Electronic devices used to view or print the results of data processing done on a computer.
video monitor ![click to hear : video monitor click to hear : video monitor](../../images/speaker-vert.gif)
Device with a cathode ray surface that displays computer-generated graphics and texts visually.
centering control ![click to hear : centering control click to hear : centering control](../../images/speaker-vert.gif)
Button that adjusts the position of the image on the screen.
horizontal control ![click to hear : horizontal control click to hear : horizontal control](../../images/speaker-vert.gif)
Button that adjusts the width of the image.
vertical control ![click to hear : vertical control click to hear : vertical control](../../images/speaker-vert.gif)
Button that adjusts the height of the image.
power switch ![click to hear : power switch click to hear : power switch](../../images/speaker-vert.gif)
Mechanical device that turns the monitor on or off.
brightness control ![click to hear : brightness control click to hear : brightness control](../../images/speaker-vert.gif)
Button that increases or decreases the contrast between the light and dark parts of an image.
power indicator ![click to hear : power indicator click to hear : power indicator](../../images/speaker-vert.gif)
Signal light indicating that the screen is on.
contrast control ![click to hear : contrast control click to hear : contrast control](../../images/speaker-vert.gif)
Button that adjusts the black and white part of an image.