色久视频,欧美自拍一区偷拍,Chinese自拍被大屌干,日韩黄色一区二区免费电影

When it comes to Light writing board, the first reaction in everyone's mind must be: Nani What is it? Let's talk about light-powered small blackboards today.

In fact, there is an alias for optical tablet, called smart LCD electronic handwriting board. But someone also called her electronic paper, magic board, writing Sketchpad, graffiti board. But no matter how she changes her name, it reflects her use in the side, that is, writing, painting, graffiti, leaving messages, memos, and taking notes.

As an ordinary tablet, why do consumers receive great attention? It is mainly due to her own sense of technology and innovation. For thousands of years, paper and ink pen are indispensable to mention writing. No matter how society develops or how technology advances, this traditional habit of use is deeply rooted in the subconscious of each of us. With the development of the times, although paper and pen are gradually evolving towards the direction of scientific and technological innovation, environmental protection and energy conservation, but are limited to improvement and upgrading. The emergence of light-powered tablets completely overturned the traditional writing tools and methods, and fundamentally solved the long-standing dependence on traditional writing tools.

Light-powered writing boards make use of the characteristics of bistable liquid crystals, which can record the trajectory when the pressure acts on the surface of the liquid crystal screen. Driven by a certain voltage waveform, the bistable liquid crystal will return to its original state. Based on the characteristics of flexible liquid crystal, light-energy writing board in writing without pen, no paper, any hard objects can be used as a writing tool.

In addition, the advantage of light writing board is the micro power consumption. Because the flexible liquid crystal technology is a bistable display technology, the characteristics of the two optical states can be stable in the absence of external electric field for a period of time, under the external electric field, the two optical states can be converted to each other. Since the two optical states used in the display are stable without external electric field, it is not necessary to add external electric field for a long time to maintain the display state, so there is a comparatively energy-saving feature.

The writing screen of light writing board is made of pure physical material and can be erased more than 50000 times. A button battery is built inside the board. When the battery is used up, it can be disassembled and replaced. It is easy to use and has a long service life. Especially for children of the right age, she is not afraid of falling and grinding. She is a friend and partner that children can trust and play with.

According to statistics, we can save a tree by wasting 1,500 sheets of paper. If we save at least 50,000 sheets of paper on a single board, we can save 33 more trees. It is based on the concept of environmental protection and energy conservation of light-powered writing boards, since the first day of listing, it has been loved by students, parents and teachers. She not only changed our way of life, but also improved our awareness of environmental protection, conforming to the trend of the times, will benefit mankind for a long time.