42 Research, development, and design of computer hardware, digital signage, digital signage monitors, digital signage display panels, interactive digital signage players, digital directional signage, media servers and media networks; technical consulting in the field of design of computer hardware, digital signage, digital signage monitors, digital signage display panels, interactive digital signage players, digital directional signage, media servers and media networks; Research, development, and design of computer software for all types of screen-based communications for applications including retail, advertising networks, corporate communications, education, health, public signage and hospitality; technical consulting in the field of design of computer software for all types of screen-based communications for applications including retail, advertising networks, corporate communications, education, health, public signage and hospitality; technical support services, namely, maintenance and repair of computer software for all types of screen-based communications for applications including retail, advertising networks, corporate communications, education, health, public signage and hospitality; Research, development, and design of computer hardware for all types of screen-based communications for applications including retail, advertising networks, corporate communications, education, health, public signage and hospitality; technical consulting in the field of design of computer hardware for all types of screen-based communications for applications including retail, advertising networks, corporate communications, education, health, public signage and hospitality; Research, development, and design of computer software for creating, publishing, scheduling, distributing, streaming, monitoring and managing digital content and digital signage; technical consulting in the field of design of computer software for creating, publishing, scheduling, distributing, streaming, monitoring and managing digital content and digital signage; technical support services, namely, maintenance and repair of computer software for creating, publishing, scheduling, distributing, streaming, monitoring and managing digital content and digital signage; Research, development, and design of computer hardware for creating, publishing, scheduling, distributing, streaming, monitoring and managing digital content and digital signage; technical consulting in the field of design of computer hardware for creating, publishing, scheduling, distributing, streaming, monitoring and managing digital content and digital signage; Research, development, and design of digital advertising display apparatus, digital advertising display signs, computer display monitors, display devices, television receivers, and film and video devices; technical consulting in the field of design of digital advertising display apparatus, digital advertising display signs, computer display monitors, display devices, television receivers, and film and video devices; Research, development, and design of display monitors, display screens, display terminals, electronic display panels, flat panel displays, information display terminals, LED displays, liquid crystal displays, OLED displays, video display screens, video display units, visual display screens, visual display units; technical consulting in the field of design of display monitors, display screens, display terminals, electronic display panels, flat panel displays, information display terminals, LED displays, liquid crystal displays, OLED displays, video display screens, video display units, visual display screens, visual display units; Research, development, and design of smartphones, PDAs, electronic devices with wireless or wire based internet connectivity, wireless information devices, computers, PCs, laptops, notebooks, and tablets; technical consulting in the field of design of smartphones, PDAs, electronic devices with wireless or wire based internet connectivity, wireless information devices, computers, PCs, laptops, notebooks, and tablets; Research, development, and design of network management apparatus, network management control apparatus; technical consulting in the field of design of network management apparatus, network management control apparatus; Research, development, and design of computer software; technical consulting in the field of design of computer software; technical support services, namely, maintenance and repair of computer software; Research, development, and design of computer software used in computer hardware, digital signage, digital signage monitors, digital signage display panels, interactive digital signage players, digital directional signage, media servers and media networks; technical consulting in the field of design of computer software used in computer hardware, digital signage, digital signage monitors, digital signage display panels, interactive digital signage players, digital directional signage, media servers and media networks; technical support services, namely, maintenance and repair of computer software used in computer hardware, digital signage, digital signage monitors, digital signage display panels, interactive digital signage players, digital directional signage, media servers and media networks; Research, development, and design of computer software used in digital advertising display apparatus, digital advertising display signs, computer display monitors, display devices, television receivers, and film and video devices; technical consulting in the field of design of computer software used in digital advertising display apparatus, digital advertising display signs, computer display monitors, display devices, television receivers, and film and video devices; technical support services, namely, maintenance and repair of computer software used in digital advertising display apparatus, digital advertising display signs, computer display monitors, display devices, television receivers, and film and video devices; Research, development, and design of computer software used in display monitors, display screens, display terminals, electronic display panels, flat panel displays, information display terminals, LED displays, liquid crystal displays, OLED displays, video display screens, video display units, visual display screens, visual display units; technical consulting in the field of design of computer software used in display monitors, display screens, display terminals, electronic display panels, flat panel displays, information display terminals, LED displays, liquid crystal displays, OLED displays, video display screens, video display units, visual display screens, visual display units; technical support services, namely, maintenance and repair of computer software used in display monitors, display screens, display terminals, electronic display panels, flat panel displays, information display terminals, LED displays, liquid crystal displays, OLED displays, video display screens, video display units, visual display screens, visual display units; Research, development, and design of computer software used in smartphones, PDAs, electronic devices with wireless or wire based internet connectivity, wireless information devices, computers, PCs, laptops, notebooks, and tablets; technical consulting in the field of design of computer software used in smartphones, PDAs, electronic devices with wireless or wire based internet connectivity, wireless information devices, computers, PCs, laptops, notebooks, and tablets; technical support services, namely, maintenance and repair of computer software used in smartphones, PDAs, electronic devices with wireless or wire based internet connectivity, wireless information devices, computers, PCs, laptops, notebooks, and tablets; Research, development, and design of computer software for application and database integration; technical consulting in the field of design of computer software for application and database integration; technical support services, namely, maintenance and repair of computer software for application and database integration; Research, development, and design of network management software; technical consulting in the field of design of network management software; technical support services, namely, maintenance and repair of network management software; Technical support services, namely, troubleshooting in the nature of diagnosing of computer hardware and software problems for digital advertising display apparatus, digital advertising display signs, computer display monitors, display devices, television receivers, and film and video devices; Technical support services, namely, troubleshooting in the nature of diagnosing of computer hardware and software problems for display monitors, display screens, display terminals, electronic display panels, flat panel displays, information display terminals, LED displays, liquid crystal displays, OLED display screens, visual display units; Technical support services, namely, troubleshooting in the nature of diagnosing of computer hardware and software problems for smartphones, PDAs, electronic devices with wireless or wire based internet connectivity, wireless information devices, computers, PCs, laptops, notebooks, and tablets; Technical support services, namely, troubleshooting in the nature of diagnosing of computer hardware and software problems for network management apparatus, network management software, network management control apparatus; Technical support services, namely, troubleshooting in the nature of diagnosing of computer hardware and software problems for video display screens, video display units, visual display screens