A method of refreshing the image on a monitor. A Non-interlaced monitor refreshes the entire image (each scan line) in one pass. An interlaced monitor refreshes the odd-numbered scan lines first, then refreshes the even-numbered scan lines on the second pass, which can cause flicker and eye strain.
Describes a monitor in which the display is updated(refreshed) in a single pass, painting every line on the screen. Interlacing takes two passes to paint the screen, painting every other line on the first pass, and then sequentially filling in the other lines on the second pass. Non-interlaced scanning, while more expensive to implement, reduces unwanted flicker and eyestrain.