Before there were Nixie tubes, there were edge-lit displays: "Each digit panel has a tiny incandescent lamp associated with it that lights when that the numeral on the panel is to be displayed. When the tiny lamp corresponding to a given digit panel lights, the light is injected into the edge of the plastic panel. The engraved area in the plastic causes interference with the light as it travels through the plastic, and some light is refracted out through the plane of the panel, causing the engraved dots making up the digit to light up with a white glow. The resulting digits look much like the fully formed numerals in a Nixie tube, except rather than an orange glow, the Canon display digits give off a cool white glow like that of an incandescent light bulb."
As Chris notes, "Nixie tubes are cutting-edge compared to this."
Non-Linear Systems Model 481
Edge Lit Display Teardown
Canon 161 Calculator
[Old Calculator Museum]
(Thanks, Chris Hoppe!)
Sony’s cameras seem to be in a league of their own. So why do professionals stick with bulkier models from Canon and Nikon? One answer is glass—often just as pricey as pro-grade bodies, and you need a lot of it to be in business. DPReview’s Dan Bracaglia suggests that Sony’s latest full-frame model, the $5,000 […]
Chester (or Shasta?), a Red Labrador, has figured out a way to deal with the Roomba that’s more efficient than barking at it or biting it: turning it off. [Thanks, Heather!]
An EU court ruled against a seller of customized set-top boxes this week, with the judge saying that his preinstallation of certain Kodi Add-Ons makes the boxes illegal to offer. Mr Wullems sells, over the internet, various models of a multimedia player under the name ‘filmspeler’. That device acts as a medium between a source […]
Bamboo has lots of uses beyond just being panda food. Things like bikes, roads, scaffolding, and musical instruments are made from the fast-growing grass. But unless you are participating in a tropical-themed LARP, you probably wouldn’t want a shirt made from bamboo stalks. So why do bamboo bed sheets make any sense? Because yarn extracted from […]
If you want to work in tech, but don’t have any desire to code web apps to help businesses sell things to other business, you might want to consider a career in cybersecurity. Judging from the apparent complete infiltration of Russian hackers in American cyberspace, it seems fair to speculate that there’s a major shortage of […]
All moms are different. But all moms like getting flowers on Mother’s Day, and that’s a fact (not, however a fact we can document in any fashion.) Instead of getting chewed out for forgetting to call her on the second Sunday of May, you can take care of it ahead of time with Teleflora’s flower […]