IMPLEMENTATION OF RIPPLE CARRY ADDER USING ADVANCED MULTILAYER THREE INPUT XOR GATE (TIEO) TECHNIQUE IN QCA TECHNOLOGY

In the present era, transistor reached their highest density and cannot go much smaller than their present size. There are many designs of QCA adders are present in literature, this is new multilayered schematic layout of adder based on QCA technology. In QCA main emphasis on the area and delay reduction leads to an efficient adder design. The proposed adder have less hardware complexity, such as number of cell , delay and total area .QCA designer is the software used form layout generation and simulation results are shown using the coherence vector engine in the same software.