A logic apparatus having first and second single-electron devices connected serially or in parallel. Each of the single-electron devices includes a conductive island insulatively disposed between two tunnel barriers, which separate the conductive island from respective source/drain electrodes. A first charge storage region is insulatively disposed over and under the conductive island and a gate electrode, respectively. When charges are accumulated in the charge storage region, a Coulomb oscillat...

In a logic circuit comprising a low-amplitude CML circuit including a transistor functioning as a constant-current source, the constant-current source transistor is biased by a bias power source which is capable of compensating for both the power supply voltage dependency and the junction temperature dependency of the CML circuit. In the logic circuit, negative feedback is applied to the constant-current source transistor through its base bias circuit to compensate for the dependency of the cons...

A current mode logic circuit (CML) consisting of emitter-coupled transistors, one acting as a reference element and the other as an input element, a regulation transistor for regulating the emitter current of the transistors, a biasing circuit composed of a diode, a Schottky diode and a resistance element connected in series between a V.sub.EE terminal and a V.sub.CC terminal and a biasing transistor, the collector of the biasing transistor being connected through a resistor to V.sub.CC and conn...

A push-pull driver circuit wherein the input signals is applied to turn on one of two transistors mounted in series and the inversion of that signal is applied to the second transistor in the series path and the output taken from between them operates to isolate the load and since one and only one of the two transistors in the series path is conducting there is a path to charge and discharge the load capacitance but no path through both devices for power dissipation. The driver circuit can be bu...

A logic apparatus comprises a first single-electron device formed of a first conductive island, two first tunnel barriers with the first conductive island interposed, first and second electrodes, and a first charge storage region, and a second single-electron device formed of a second conductive island, second tunnel barriers with the second island interposed, third and fourth electrodes, and a second charge storage region, the first electrode of the first single-electron device being connected ...

A logic circuit comprises four NAND or NOR gates. The first and second gates are cross-coupled and the third and fourth gates are also cross-coupled. The outputs of the first and second gates are coupled to the inputs of the third and fourth gates respectively. Complementary clock pulses are respectively supplied to the first and second gates and the third and fourth gates, and first and second logic inputs are applied to the inputs of the first and second gates, respectively.

A logic circuit in which a phase splitting transistor is connected at its emitter to the base of an output pull-down transistor having a bypass network connected between its base and emitter. The bypass network, comprised of a resistor in series with a Schottky diode, enables the phase splitting transistor to be turned on and off prior to the corresponding turn-on and turn-off of the pull-down transistor, provides a path for discharging the base of the pull-down transistor and for passing its co...

A logic circuit is described for controlling a plurality of solid state switches in a wired broadcasting system. The circuit is arranged to distinguish between dialling and reset pulse signals applied to an input, and has a plurality of outputs to which the solid state switches are connected. The circuit sequentially switches the condition of the outputs in response to dial pulse signals, and resets the outputs to a datum condition in response to the reset pulse signal.

A logic module includes a container for containing at least one printed circuit board. The container is closed by a removable connector base. At least one connector receptacle is formed on the base so as to protrude externally of the closed container. Connector pins are mounted in each receptacle so that one end of the pins protrude into the receptacle for connection to an external electrical connector. Another end of the pins protrudes into the container for connection to the circuit board. The...

A logic module system comprising a plurality of cams adapted to be moved by xternal forces, such as ram air pistons, rate controlled springs, or the like. The cams are in contact with a spring loaded control member or plunger. Each individual cam is profiled to present a control surface to the plunger at specified time intervals or "windows." Dependent on the combined control surfaces present at any instant in time, the spring loaded plunger will respond in a prescribed manner to activate a seri...