Research Article
An Efficient Design of DCT Approximation Based on Quantum Dot Cellular Automata (QCA) Technology
Table 3
Comparison of the proposed D flip-flop with the previous works.
| Circuit | Cell count | Area (μm2) | Clock no. cycle | Crossover type |
| DFF [56] | 66 | 0.08 | 1.5 | Coplanar | DFF [57] | 49 | 0.05 | 1 | Not required | DFF [58] | 46 | 0.03 | 0.75 | Not required | DFF [21] | 46 | 0.05 | 1.25 | Not required | Proposed adder | 42 | 0.04 | 1.5 | Not required |
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