The first result was a GitHub repository titled “Logisim-Evolution-Digital-Clock.” The README said: Fully functional 24-hour clock with 7-segment display, comparator logic, and manual set/reset buttons. Download the .circ file and open in Logisim Evolution v3.8+.
Under that, a comment from a user named “CircuitWizard99” read: “Spent 20 hours building mine. Found this. Cried. Works perfectly.” logisim digital clock download
Double-click. Logisim Evolution launched, and on the canvas sat a masterpiece. Seven-segment displays for hours, minutes, seconds. A clean grid of counters, AND gates comparing to 24, a reset path that actually worked. Plus extras Jamie hadn’t thought of: an AM/PM LED, a 1Hz clock generator from a 50Hz simulation source, and a “manual increment” button for testing. The first result was a GitHub repository titled
For a moment, Jamie felt guilt. Should I build my own? Then fatigue won. Jamie opened the circuit, traced the connections for ten minutes, understood the trick (a comparator feeding a clear signal only when hours reached 24, not 23), and decided: I’ll rebuild mine using this pattern, not copy it. Found this
By 5 AM, Jamie’s own clock was running—messier wires, but it worked. And in the final report, under “References,” Jamie wrote: “Inspiration from open-source Logisim clock model. Download link in footnotes.”
The professor gave an A. And somewhere in the GitHub commit history, “CircuitWizard99” got one more star. Sometimes the best way to learn is to download a working example—not to cheat, but to see what’s possible. Then build your own, better.