Eleven-bit parity generator with a single, vertically integrated resonant tunnelling device

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Abstract
A vertically integrated diode (VID) with five negative differential resistance regions has been developed by stacking five resonant tunnelling structures. This device can be used for processing both analogue and digital signals. An 11-bit parity checker was demonstrated using the VID. In this approach, a single device replaced a large number of exclusive-OR gates in a conventional parity checker.