Fragment 70 of 72 · drawer 06
Split-flap cascade
An original notation for the scale and decay of a split-flap update, with no recorded board reproduced.
- Accession
- MW-F-070
- Representative period
- Graphic interpretation of public mechanical display
- Drawer
- Acoustic notation
- Certainty
- moderate
Split-flap cascade
Graphic interpretation of public mechanical display
Observed surface
single module clak-clak-clak—STOP
one row cccccccccccccc / uneven stops
whole board █████ rolling field from many rows
Implied procedure
Near characters stop early; distant targets continue.
The field thins until one last module declares the physical end of the update.
Interpretive residue
Magnitude is audible before meaning: a larger cascade suggests a larger revision.
The score describes public attention being recruited by mechanism.
Accountability record
Evidence beneath the reconstruction.
These institutional sources support the mechanism or historical practice interpreted above. They do not contain this reconstructed record, its wording, or its invented values.
- The Museum of Modern Art · 1996 object Flight Information Display System (Split Flap Board) A museum catalogue record for a large Solari electromechanical flight-information board, useful as evidence of the physical display as a designed public object. Open institutional record ↗
- Italian Patent and Trademark Office · institutional catalogue Italian patents and designs of historical interest An Italian government catalogue describing Solari's 1956 railway public-information installation in Liège and the electromechanical character system's public role. Open institutional record ↗