https://cluster-site.onrender.com/tags/punch-card/ Recent content in Punch Card on Tenu Tech Brief Hugo -- 0.146.0 en-us Tue, 24 Feb 2026 06:04:03 +0000 https://cluster-site.onrender.com/posts/inside-a-dutch-street-organ-the-art-of-mechanical-music-making/ Thu, 19 Feb 2026 00:00:03 +0000 https://cluster-site.onrender.com/posts/inside-a-dutch-street-organ-the-art-of-mechanical-music-making/ • Dutch street organ: mechanical music machine, powered by cranking wheel, now belt-driven. • Operates via perforated cardboard punch cards, triggering valves for pipes, percussion