smart board 2000 series display user??s guide.Industry introduction The research and development of touch screen products began in the United States in the 1960s, and the maturity and growth of the technology should be mainly attributed to the Japanese industry. Especially the human-computer dialogue system that attracted much attention in the 1970s was an excellent touch screen technology With the continuous popularization of applications, Japanese companies have developed touch screen production processes suitable for mass production, and gradually controlled more than 80% of the global touch screen production capacity. In order to control the production technology of touch screen, Japanese companies have always adhered to the strategy of not transferring touch screen technology. Until the 1990s, South Korean and Taiwanese manufacturers have made breakthroughs in touch screen technology and started to have a place in the touch screen market. However, their mass production capabilities and technical standards are still far behind the Japanese players. In the tide of reform and opening up, especially since the beginning of the 21st century, with the rapid development of information technology and flat display technology in China, many domestic companies have also become interested in touch screen technology, and some have introduced talents studying abroad to develop touch screen technology; Some have cooperated with overseas enterprises in production and gradually mastered this technology. At present, the situation where touch screens can only rely on imports has changed. In the domestic market, at the beginning touch screens were mainly used in information inquiry systems in public places. At first, it was a simple system that displayed a menu selection screen and let customers click one by one. The software processing speed and the durability of the touch screen were low. In recent years, with the enhancement of domestic touch screen manufacturing and development capabilities, as well as the improvement of computer application capabilities and the advancement of display technology, industry experts have developed a variety of touch screens that are suitable for personalized uses and have durability and reliability. At present, touch screens are used in many public places (such as ticket machines at stations, retrieval terminals in libraries, etc.). In addition, touch screens are also used in machinery and equipment used in modern factories as a control panel. In addition, the use of touch screens in sales processing systems, portable information terminals, and automatic recorders centered on the POS system has greatly enhanced the convenience of its work. 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.