An electroluminescent digital indicator with Elpak translation logic

In many instances our advancing technology today demands that information be presented to the human observer in digital rather than analog form. A very desirable digital indicator can be achieved if a set of mutually insulated back electrodes or segments are formed on an electroluminescent panel. By applying excitation to selected combinations of these segments, bright numerals or other figures may be formed. The logic required to translate from the input information to the segment code can be accomplished with a number of conventional devices. However, a relatively new switch, known as an Elpak relay, has proved to be well suited to this application.