(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 is software that causes the display to go black (by setting every pixel to black) to prevent burn-in. (1997-08-25)