The DT-1704 VFD as seen the 1976 Radio Shack Catalog. The “A” version has no substrate, making the VFD fully clear for added effect. When you have a small stock of vacuum fluorescent displays (VFDs) ...
There are a great many display technologies available if you wish to make a digital clock. Many hackers seem to have a penchant for the glowier fare from the Eastern side of the Berlin Wall.
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