My first Frequency Counter designed by Hewlet Packard had at least 50 vacuum tubes. Each digit was repsented by a vertical column of neon light bulbs labeled 0 thru 9. I believe it went as high as 10 Mhz.
After it died, I discovered that it had a temperature controlled oven with a 100 Khz Crystal inside for the time-base and also several diiodes used for other purposes. I believe it was one of the first counters made using combined solid state and vacuum tube technology circa 1956 give or take a few years. I purchased it in 1976 at a local school rummage sale for just $5.00
The company says it anticipates high-definition video for home security and other uses will be the next mature technology integrated into the IoT domain, hence the introduction of its MatrixCam devkit.
Siemens and Georgia Institute of Technology are partnering to address limitations in the current additive manufacturing design-to-production chain in an applied research project as part of the federally backed America Makes program.
Most of the new 3D printers and 3D printing technologies in this crop are breaking some boundaries, whether it's build volume-per-dollar ratios, multimaterials printing techniques, or new materials types.
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