The LED display board is coming to be more and more common in our society. An LED board could show all sorts of details, such as alerts to motorists on the highway, company memos to employees, or advertising. Sometimes, the details is updated infrequently and also the adjustment can take place overnight; but in various other cases it is necessary to update in a timely manner, as near actual time as feasible.
The LED display board may recover its content from a database, convert it into dot-matrix kind (otherwise stored that way), and also map the image right into its memory. This is appropriate for fixed display screens or for a collection of basically static material.
However to give the capacity to deal with unexpected emergency alerts, a hands-on override is critical. When a human operator receives the notification, she or he key ins the message, causes it to be converted into image form, as well as disturbs whatever static screen or rotating program of photos is presently being revealed, changing it with the recently converted urgent message. This split second or near-instant action is the emphasis of this post.