1. Resolution is the key The word "resolution" is used in many fields and can have many meanings according to the content of the article. When discussing the clarity of the display of electronic products, such as monitors and interactive electronic whiteboards, the definition is as follows: Resolution The number of dots (or pixels) on each line. Points are usually expressed along the horizontal and vertical edges of a screen or monitor. Each of these points represents a small message on the screen or monitor. For example, the resolution of current pressure-sensitive electronic whiteboards on the market is 4096 * 4096, which means that 4096 pixels are scanned along the horizontal direction of the board, while 4096 pixels are scanned along the vertical direction of the board. In contrast, an interactive writing whiteboard scans 62,000 points along the horizontal direction of the board and 46,500 points along the vertical direction. Its resolution is 15 times that of a pressure-sensitive whiteboard. Second, compare the resolution of the whiteboard with the principle of electromagnetic induction and the principle of pressure sensitivity According to the grid structure diagram of the whiteboard, we can see that the IPBOARD board is divided into more samples than the pressure-sensitive whiteboard. When the user performs simple operations on the whiteboard, such as writing on the board, operating a spreadsheet, and inferring a mathematical axiom, the user feels that the accuracy of the board is very good. 3. Comparison between the resolution of the projector and the resolution of pressure sensitivity The manufacturers of pressure-sensitive interactive whiteboards claim that as long as the resolution of their boards is greater than the resolution of the projectors used with them, the operation on the whiteboard will not be affected. According to our previous chart, no matter what the resolution of the projector is, the end result is that users of electromagnetic induction whiteboards will be more willing to choose, because it divides the selectable points smaller. In addition, projector technology is developing rapidly, which quickly makes the operation of pressure-sensitive whiteboards unattractive. This chart shows that the resolution of the SXGA projector is four times greater than its VGA counterpart. â— Pressure-sensitive interactive electronic whiteboard has only 160,000 pixels per inch; only 12 times that of the current SXGA projector. â— The IPBOARD board projects 280,000 pixels per inch, which is 2000 times the resolution of the SXGA projector. About resolution accuracy and precision Often associated with interactive whiteboards is accuracy and precision. â— Accuracy is a measure that the user selects a point on the whiteboard that is very close to the pen tip. The closer to the target's red heart, the more accurate. â— Precision refers to the closeness between several points that are the same. The closer the points are, the more precise they are. The larger resolution allows the user to choose a point at will, because the available points on the whiteboard are divided into very small and fine points. According to the previous instructions, IPBOARD scans 280,000 pixels per inch to make the operation on the whiteboard as accurate as possible. There is a layer of fixed electronic grid behind the IPBOARD. Think about it. When a map on the board can be edited repeatedly, this is very important for the user, especially the math teacher. Or give existing information including complex formulas to edit again. Therefore, it can be seen that IPBOARD provides users with the best technology, and they can freely find both precise and precise points on the whiteboard. 4. Comparison of electronic pen and finger Another issue discussed for accuracy and precision is the comparison of using pens and fingers on interactive whiteboards. The accuracy and precision of the pen is better than using a finger, because the diameter of the pen tip is smaller than the finger tip. A good pen tip can show the high resolution we provide for the whiteboard. Other benefits of the IPBOARD electronic pen include: Ordinary writing Pressure-sensitive whiteboard manufacturers offer using fingers as a common type of writing. All teachers will use pens to write more, because students will use pens to write after school or after school. However, not all pens are the same. When using pens provided by pressure-sensitive whiteboards, students and teachers must raise their hands and cannot put them on the whiteboard. If their hands touch the whiteboard, it will cause mistakes. Action appears. Mouse function The IPBOARD wireless sensor electronic pen also replaces the function of the mouse. Teachers and students can directly click the pen to operate the whiteboard, without right-clicking the mouse in front of the computer. Mouse track Another advantage is that using electromagnetic induction technology, you can see where the pen stays before touching the whiteboard. With a pressure-sensitive or infrared whiteboard, users cannot see the name of the location where the pen stays before touching it. If the whiteboard is not positioned correctly, this will result in a click error. Staying at the point you want to click will provide the teacher with the location information of the point to help the smooth presentation of the classroom. In addition, hovering can activate tool tips and connection tips, providing users with a place to use the mouse directly on the whiteboard Features included. V. Comprehensive performance description Electromagnetic induction technology is widely used in domestic educational products, and product software is at the forefront of domestic counterparts. At present, the mainstream of electronic whiteboards using electromagnetic induction in China is the IPBOARD interactive electronic whiteboard independently developed and produced by Shenzhen Julong Science and Education. IPBOARD products provide leading resolution technology and high accuracy, and the technical principle has been far ahead in China. IPBOARD provides a solution for interactive learning. It uses electromagnetic induction technology. Compared with other technical principles, the product performance is higher positioning accuracy, faster response speed, and provides many unique functions (one-click playback, brush, resource library, powerful Humanized and personalized design of the auxiliary teaching tools). The professional team of Julong Science and Education often visits the school to collect the teachers' opinions and constantly update the software, so that IPBOARD is widely used in classroom teaching, effectively improving the teaching effect of teachers.
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