Integrated-circuit chips; semiconductors, included in this class; electric and electronic components and units, included in this class, in particular printed circuits, semiconductor components, resistors, capacitors, coils, filters, transistors, diodes, photographic semiconductors, [ photo-resistors, ] * photoresistors, * transformers, relays, magnetic switches, fuses, electric contacts, switch clocks, microprocessors, actuators, sensors, transducers and signal sensors, in particular for the acquisition of temperature, length, filling level, flow rate, weight, frequency, noise, pressure, acceleration, velocity, brightness, tremors, gas, smoke, current, revolution speed, voltage, resistance, capacitance, induction, magnetic fields; apparatus and instruments for weak-current engineering, namely, for control engineering, in particular electronic control systems; apparatus and instruments for weak-current engineering, namely, alarm apparatus and equipment, warning apparatus and equipment, signal transmission and processing apparatus and equipment; apparatus and instruments for weak-current engineering, namely, telecommunications and high-frequency engineering; apparatus and instruments for power engineering, namely, for conducting, casing, storing, regulating and control; electric amplifiers and signal converters; apparatus and equipment for data transmission, namely, electronic units used in data transmission networks, namely, interfaces, couplers and transceivers, including installations consisting thereof; software for running and monitoring the performance of electronic and opto-electronic components and units based on semiconductor technology