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Retrotechtacular: Simulating weather patterns with a logic chip computer
In 1975, [D. L. Slotnick], CS professor at University of Illinois at Urbana-Champaign faced a problem: meteorologists were collecting a lot more data than current weather simulations could handle....
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Taking a look at decapped ICs
Aside from wanting to play around with nitric acid, [Ben] really didn’t have a reason to decap a few 74xx and 4000-series logic chips. Not that we mind, as he provides a great tutorial at looking at a...
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Homebrew FPGAs
Homebrew CPUs made out of logic chips are nothing new, but a homebrew FPGA is another matter entirely. [Joshua] sent in a project he whipped up where he made a single logic cell FPGA. Despite how...
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Discrete FPGA will probably win the 7400 logic competition
For this year’s 7400 logic competition, [Nick] decided to build an FPGA out of logic chips. Perhaps a short explanation is in order to fully appreciate [Nick]’s work. The basic component of an FPGA is...
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O Christmas tree of digital logic
[Chris] over at PyroElectro is getting into the swing of the holidays with a LED Christmas tree build. Unlike the other electrical Christmas trees we’ve seen this holiday season, [Chris] designed his...
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Duo Basic: An All-Logic Chip Educational Computer
Way back before the days of microcomputers, a few very lucky students first got their hands wet with microcomputer trainers. These simple devices used common logic chips, lights, and switches to...
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The Design And Fabrication Of A Digital Clock
This clock is the first thing that [Kevin] ever made, way back before the Arduinofication of making, and long before the open hardware community exploded, and before the advent of cheap, custom PCBs....
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