<computer hardware> An early pointing device which the user pointed at a raster-scanned display screen. A photocell in the pen detected the flying spot of the raster scan. The position of the spot at that instant, obtained from the scanning electronics, was made available to software as (x, y) co-ordinates.

(01 Aug 2003)

lightning injuries, lightning strip, light-o'-love < Prev | Next > light pipe, light reactions, light reflex

Bookmark with: icon icon icon icon iconword visualiser Go and visit our forums Community Forums