installation and repair of computerized in-store advertisement sampling apparatus, consisting of a computer, computer programs, optical disks, television monitor, electronic keypad, and product display area; video monitors; video playback devices; bar code scanners; audio systems, namely, amplifiers,; speakers and audio playback devices; headphones; LED (Light-Emitting Diode) display panels, electronic keypads; computer software, namely, operating systems; computer hardware and peripherals, namely, computers, computer monitors, computer pointing devices, and computer printers; digital and analog media, namely, computer disks and files, CD-ROMs, and laser disks