Split-flap display
A split-flap display, sometimes simply flap display, is a display device that presents alphanumeric text, and possibly fixed graphics. Each character position or graphic position has a collection of flaps on which the characters or graphics are painted or silkscreened. These flaps are precisely rotated to show the desired character or graphic. Today, these displays are often found in train stations and airports, where they typically display departure and/or arrival information.
Advantages to these displays include:
- high visibility and wide viewing angle in most lighting conditions;
- little or no power consumption while the display remains static; and
- fault-tolerance during a power loss or disruption -- the display will not normally reset.
See also
- Analog clock with digital display ("flip clock")
- Display device