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DRAM Cell Refresh (Leaky Capacitor)
V = V₀·e^(−t/τ), refreshed each period

A memory bit is charge on a tiny capacitor that leaks away — the controller must read and rewrite every cell thousands of times a second, the 'dynamic' in DRAM.
Computed & rendered in pure C# on the frozen OnlyCSharp 1.8 library — animation baked to GIF with the library's own
Gif encoder (no GPU, no ffmpeg, no external packages).