Learn the Ripple Carry Adder with interactive circuit diagrams, truth tables, Boolean expressions, carry propagation, CMOS implementation, timing diagrams, and digital logic examples.
Four full adders chained so the Carry-out of stage i feeds the Carry-in of stage i+1. Each stage can't finish until the previous stage's carry arrives — that propagation delay "rippling" down the chain is what gives this adder its name.
| A | B | Sum | Cout |
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