Tablet computers; handheld personal computers; personal digital assistants; scientific calculators; electronic calculators; educational software; computer software for data exchange between electronic devices; computer software for use as a spreadsheet and in graphing; computer software used in the field of math education; computer software for a personal computer for use in achieving data exchange between a personal computer and a wrist watch or a digital camera and other electronic apparatus and instruments; software for computers; educational instruments devices in the nature of interface devices for communications between calculators and computers; personal computers; computer hardware components and computer peripherals thereof; printers for computers; batteries; AC adapters; battery charges; USB cables; cables; memory cards; memory units; CD-ROMs; carrying cases and bags for electronic calculators, personal digital assistants and handheld personal computers; electronic pens; projectors; data analyzers; motion sensors; electronic personal organizers; digital cameras; printers for digital cameras; liquid crystal display television sets; navigation apparatus and instruments, car navigation apparatus and instruments; cellular telephones; electronic label printers; radio pagers; radios; compact disk players; apparatus for recording, transmitting or reproducing sound or images; recorded music discs, recorded video discs; films of movies; computer software; educational software featuring instruction in mathematics and calculators; software for scientific calculators; software for accessing and using a cloud computing network; downloadable cloud computer software for use in database management and use in electronic storage of data; computer software for using cloud-based applications, data and services; scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; magnetic data carriers, recording discs; compact discs, DVDs and other digital recording media; mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment, computers; computer software; telecommunication apparatus; fire-extinguishing apparatus; parts and fittings for all the aforesaid