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2 HA + OR

Full Adder - Truth Table, Boolean Expression & CMOS Circuit | Logicroo

Learn the Full Adder with interactive truth tables, Boolean expressions, gate-level implementation, CMOS transistor circuits, timing diagrams, and digital logic examples.

Full Adder

2 HA + OR

Adds three bits (A, B, Cin) and outputs a Sum and Carry — the fundamental component for multi-bit addition.

Inputs
Sum
0
Carry
0
Sum = A ⊕ B ⊕ Cin (XOR)  ·  Carry = (A · B) + (Cin · (A ⊕ B)) (OR + AND)
Truth table
ABCinSumCarry