The electronic indication board is a type of innovation, using electronic media, of typical forms of communicating with indications as well as messages. A digital indication board identifies itself in the capacity for quick updates as well as dynamic, real-time interaction. But conceptually it is no various from the billboard, the marquee, as well as similar kinds of signage. These electronic signboard predecessors go back to more than a century. They were in analog form, of course, and their messages were relatively fixed, staying unchanged for possibly a week, perhaps a month, or maybe for many years. They were largely textual, however typically included some kind of images, specifically if they were used for marketing. It is well known that any kind of sort of message with consistent (frozen) content quickly obtains overlooked after a number of repeated viewings. However there was a non-negligible cost associated with updating traditional message boards, as well as a tradeoff to think about. Increasing the diminishing returns experienced from static signs needed to be considered against the price of upgrading them to something fresh. Electronic message boards, in all their variations, in essence get rid of such a tradeoff. Updating no more involves exchanging out a limited number of physical personalities (letters, numbers, and also punctuation) for a different set. Replacing the message presented is as straightforward as an operator typing in a new one on a user interface such as a console.