Data processing apparatus; Data storage apparatus; Computer keyboards; Computer peripheral devices; Couplers (data processing equipment); Plotters; Electronic pens (visual display units); Microprocessors; Monitors (computer hardware); Mouse (computer peripherals); Readers (data processing equipment); Mouse pads; Laptop computers; Computer software applications (downloadable); Light dimmers (regulators) (electric); Fluorescent screens; Video display apparatus; Audiovisual teaching apparatus; Apparatus for use in remote control (other than remote controls for toys); Batteries, electric