  A device which converts analog magnetic signals directly into digital
information is proposed. The device concept is based on the monostable-bistable
transition logic element, which consists of two resonant tunneling diodes (load
and driver) connected in series and employs the monostable to bistable working
point transition of the circuit. Using a magnetic resonant tunneling diode as
the driver allows to control the resulting working point of the bistable region
by an external magnetic field leading either to high or low output voltage of
the circuit, effectively realizing what could be called digital
magnetoresistance.
