Why 201, you may ask? The first segment on each bar is always illuminated, acting as a “pilot light” of sorts. These marvelous glowing rectangles each have two bars (think the left and right signals on an audio meter, which is incidentally what they were often used for), each with 201 neon segments. unearthed one such device while rummaging around in his father’s shed: a pair of Burroughs Bar Graph Glow-Transfer Displays. There are, however, some more obscure (and arguably way cooler) indicators that have been lost to time. Indicator lights, analog meters, and even Nixie tubes are just a few of the many methods employed, and are still in use today. In the days before every piece of equipment was an internet-connected box with an OLED display, engineers had to be a bit more creative with how they chose to communicate information to the user.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |