⚡ 4‑variable truth table a b c d fixed · f toggles

abcdf
🔹 Canonical SOP (Minterms)
—
🔸 Canonical POS (Maxterms)
—
✨ Simplified SOP
—
✨ Simplified POS
—
🔌 Logisim Evolution 4.1.0 Circuit (SOP Layout)
⚡ click any f cell to cycle: 0 → 1 → X (Don't Care)
⚡ "Download Logisim .circ" creates a professionally routed 4.1.0 compliant schematic.