wonderamazement SG You know those that flip flip flip flip then show "departure", "delayed" or "boarding"... Very interested in the mechanisms involved...
abracadabra SG you heard of something call computer programming? must be expensive to maintain that thing.
safetyleo SG have been seeing that “flip,flip, flip…” thing since young, still using now….over 40 years…. I like to look at that information board for long when I am in airport…