Electronic devices used in machines and devices, namely, semi-conductors, electronic circuits, integrated circuits, chips, photocells, diodes, transistors, circuit boards, crystal oscillators, capacitors, interface circuits, delay lines, electronic LCD display units, electronic hybrid circuits, electronic heat sensors, electronic converters, magnetic heads, electronic magnetic deflection devices, electronic indicators for vehicles; speed indicators, oil indicators, fuel indicators and temperature indicators, tachometers, taximeters