Collaborate Disseminate
[Mikrowave1] had a Unelco shortwave receiver as a kid. This was a typical simple radio for the 1960s using germanium and silicon transistors. It also had plug-in coils you had …read more Continue reading A Nostalgic Look at a Kid’s Shortwave Resistor
Designing combinatorial digital circuits seems like it should be easy. After all, you can do everything you want with just AND, OR, and NOT gates. Bonus points if you have …read more Continue reading Secrets of the Old Digital Design Titans
If you think of supercomputers, it is hard not to think of Seymour Cray. He built giant computers at Control Data Corporation and went on to build the famous Cray …read more Continue reading Remembering Seymour Cray
Navigating aircraft today isn’t like the old days. No more arrows painted on a barn roof or rotating airway beacons. Now, there are a host of radio navigation aids. GPS, …read more Continue reading DME with a Twist of LimeSDR
If you have a hobby, it is natural to want to share it with kids. If you are interested in 3D printing, you may even have kids who want to …read more Continue reading Sharing 3D Printing with Kids
We’ve often thought that while going to the moon in the 1960s was audacious, it was just the flashiest of many audacious feats attempted and accomplished in the 20th century. …read more Continue reading How the Bell System Was Built
For most people, you turn on your computer, and it starts the operating system. However, the reality is much more complex as [Thasso] discovered. Even modern x86 chips start in …read more Continue reading A 64-bit x86 Bootloader from Scratch
When everything used wires, it was easy to splice them or replace them. Not so much with PC boards, but everyone has their favorite method for repairing a broken trace. …read more Continue reading Five Ways to Repair Broken PCB Traces
If you were expecting a post about ancient kings and queens, you are probably at the wrong website. [Burn Heart] has a fascination with ancient measuring devices and set out …read more Continue reading Rulers of the Ancient World — Literally!
Modern tech is great, but we have to admit that we sometimes miss when electronic things looked complicated. A modern computer looks dull compared to, say, an IBM 360. Control …read more Continue reading Home Automation Panel Looks Industrial