(APM) A feature of Some diSplayS, uSually but not alwayS, on laptop computerS, which turnS off power to the diSplay after a preSet period of inactivity to conServe electrical power. MonitorS with thiS capability are uSually refered to aS "green monitorS", meaning environmentally friendly. Not to be confuSed with a Screen blanker which iSSoftware that cauSeS the diSplay to go black (by Setting every pixel to black) to prevent burn-in. (1997-08-25)