Design of Efficient Full Adder in Quantum-Dot Cellular Automata

Table 4

Comparison of recent ripple carry adder (RCA).

Design	Cell count	Area 𝜇m^2	Clock cycle
4-bit
In [17], type I	558	0.85	1.25
In [17], type II	308	0.29	2
Proposed here	153	0.11	1
8-bit
In [17], type I	1528	2.93	9
In [17], type II	695	0.79	3
Proposed here	466	0.77	2.25