![]() Therefore, from the perspective of stability and maturity, I do not think it is the best choice to buy IPJ now. It took a long time for the infrared whiteboard to solve the problems of positioning drift and solar interference. Such problems are more common in the interactive field. ![]() Even products such as iPhone will encounter a series of events such as paint door, antenna door, etc. ![]() The maturity and stability of each product requires a lot of user experiments and market accumulation. On the contrary, the development of IPJ is only a few years, and the number of users is N orders of magnitude different from that of IWB. Usually, schools do not need much product maintenance after purchasing. In the actual application process, the failure rate and repair rate of IWB are controlled at a very low level. The IWB has proved to be a stable and reliable product. Millions of teachers and students around the world have proved that the IWB has improved the efficiency of classroom teaching. The worldâs first IWB was launched in the SMART factory in 1991.
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