Definition
A type of digital display that forms characters and graphics by illuminating a pattern of dots within a matrix. These were early forms of electronic information boards used for public announcements.
Why it matters (in Poovi’s context)
Highlighted as a specific technological tool that enabled the reduction of uncertainty for passengers on the London Underground.
Key properties or components
- Pixelated output
- Information display
- Low-resolution graphics
Contradictions or debates
None.