Electric components, namely, resistors and resistor networks, low value electric resistors, electric shunt resistors and electric current sensory resistors used in electrical circuits, potentiometers, capacitors, plasma displays, surge arrestors, antennas, chokes, connectors, lighting and transient suppressors, crystal frequency [ times, ] * timers * filters, transformers, electrical indicators, inductor coils, electrical and electronic networks involving both active and passive circuit elements for use in electronic equipment, electrical cables, printed circuit boards, amplifiers, direct and alternating electric power supply units for primary use in testing of electronic equipment and delay lines; oscillators, electronic display units, and thermistors; strain gage transducers and stress analysis systems; semiconductor components, namely, semiconductor chips, transistors, diodes, voltage suppressors and rectifiers; diode arrays, thyristors, and integrated circuits; low profile DC/DC converters; computer software for use in weighing systems for the purpose of monitoring weight in industrial processes; computer software for use in stress analysis of metals, ceramics, plastics, composites, wood, and other engineering materials