7 inch touch screen.In 1971 , American SamHurst invented the world's first touch sensor . Although this instrument is not the same as the touch screen we see today, it is regarded as the beginning of the development of touch screen technology. At that time, SamHurst was a teacher at Kennedy University. Because he had to deal with a large amount of graphic data every day, he began to figure out how to improve work efficiency and get the graphics in the simplest way. He transformed his three basements into workshops, one for processing wood, one for electronic components, and one for assembling these parts, and eventually made the earliest touch screens. This earliest touch screen was named " AccuTouch " and because it was assembled by hand, several devices were produced a day. In 1973 , this technology was selected as one of the 100 most important new technology products of the year by the "Industrial Research" magazine . Soon, SamHurst established his own company and cooperated with Siemens to continuously improve the technology. It wasn't until 1982 that Sam Hurst 's company exhibited 33 touch-screen-equipped TVs at a technology show in the United States .

7 inch touch screen.In 1971 , American SamHurst invented the world's first touch sensor . Although this instrument is not the same as the touch screen we see today, it is regarded as the beginning of the development of touch screen technology. At that time, SamHurst was a teacher at Kennedy University. Because he had to deal with a large amount of graphic data every day, he began to figure out how to improve work efficiency and get the graphics in the simplest way. He transformed his three basements into workshops, one for processing wood, one for electronic components, and one for assembling these parts, and eventually made the earliest touch screens. This earliest touch screen was named " AccuTouch " and because it was assembled by hand, several devices were produced a day. In 1973 , this technology was selected as one of the 100 most important new technology products of the year by the "Industrial Research" magazine . Soon, SamHurst established his own company and cooperated with Siemens to continuously improve the technology. It wasn't until 1982 that Sam Hurst 's company exhibited 33 touch-screen-equipped TVs at a technology show in the United States . IQTouch K interactive touch screen feature 20-point touch and dual system -- Android 8.0 system and optional OPS Windows 10Pro system. Its 4K UHD resolution facilitates presentations and collaboration. With optional multi-screen casting software, IQClass 6.0 and installation-free IQClass Plus software, IQTouch K Series can help create an interactive and collaborative teaching atmosphere in class.