Circuit boards; [ Computer monitors; Computer operating programs; Computer operating systems; Computer screens; Computers; ] Data processing apparatus; [ Discharge tubes, electric, other than for lighting; Electric resistances; ] Electronic indicator boards; [ Fluorescent screens; Integrated circuits; ] Light emitting diode (LED) displays; Light emitting diodes (LEDs); [ Plotters ; ] Printed circuit boards (PCBs); [ Semi-conductors; Touch screens; Touchscreen monitors; Transistors; Triodes ] ...