345 / | HD | COMPUTER GRAPHICS PROCESSING, OPERATOR INTERFACE PROCESSING, AND SELECTIVE VISUAL DISPLAY SYSTEMS |
30 | DF | PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) {4} |
55 | DF | .~ Display elements arranged in matrix (e.g., rows and columns) {10} |
108 | .~.~ Plural mechanically movable display elements {3} | |
109 | DF | .~.~.~> Having shutters |
110 | DF | .~.~.~> With motor or rotor driver means |
111 | DF | .~.~.~> With a permanent magnet placed on movable display elements |