A Quantum-dot Cellular Automata (QCA) device having normal QCA cells laid out in a planar structure such that there are a set of input lines, that may be columns, and a set of orthogonal, output lines, that may be rows. The device has clocking regions that control the flow of binary signals through the device. The input columns are driven by a separate input signal, and all the cells of each column align to match their input signal. These input columns then serve as drivers for output rows that act as serial shift registers under the control of clock signals applied to sub-sections of the rows. In this way, a copy of the contents of each of the input signals propagates along each of the output rows to an output cell. The output cells of each output row may be assigned their own, latching clock signal.