Audiovisual teaching apparatus, namely, audiovisual display devices in the nature of electronic flat panel displays for educating students and communicating with other displays on a network; pre-recorded cds, video tapes, laser disks and dvds featuring general educational subject matter for education courses at the level of primary, secondary and college schools; plate cameras; respirators for filtering air; downloadable electronic study books and written articles featuring general educational subject matter for education courses at the level of primary, secondary and college schools; computer software, namely, software for use in educating students and communicating with other computers on a network; mounting devices for cameras and monitors; data processing apparatus; microprocessors; tablet computers; touch panels; touch pads; laser measuring systems; diodes; semiconductors; electronic testing apparatus for testing operation of semiconductors; semi-conductor memory units; semi-conductor wafers; wafers for integrated circuits; testing apparatus for testing printed circuit boards; connectors for electronic circuits; integrated circuits; integrated circuit module; chips in the nature of integrated circuits; thermistors; transistors; printed circuits; circuit boards