A multi-state memory using resonant tunneling diode pair

A multistate memory using the resonant tunneling diode (RTD) pair is described. Two RTDs in series can have 2N+1 stable states. With this concept, a five stable states memory cell has been implemented with two 2-peak RTDs. This device should provide high packing density and low power consumption. Encoder and decoder circuits are given as an example to communicate with the computational modules which use binary logic.<>