Electronic blackboards; Electronic interactive whiteboards; Electronic computer whiteboards; Electronic tablet computers for note-taking; Microphones; Apparatus for the recording, transmission and reproduction of sound and images; Digital signage display panels; Digital signage monitors; Digital signage; TV monitors; Television receivers; Wireless television sets for providing video conferencing and telephone service over the internet; LED displays; LED signs; USB transmitters for PC screen sharing to Signage, TV, LED display sets; Display monitors with built-in cameras and microphones; Computers; Computer display monitors; Computer application software; Computer software for allowing sharing and mirroring contents between laptops, mobile devices, etc. and displays; Computer software for video conferencing; Computer hardware and recorded software sold as a unit for use with digital signage monitoring equipment, for receiving, processing, transmitting and displaying data and images; Electronic pens; Touch screens; Multi touch screens; Computer software to be embedded on an electronic blackboard; Computer application (app) to be used when users write the contents on an electronic blackboard; Computer application (app) allowing to share the contents written on an electronic blackboard