The same size, the display area of the teaching all-in-one machine is much higher than that of the electronic whiteboard and the
First of all, from the perspective of the real display area, the display area of 84-89 inches is about 80 inches due to the frame, display ratio, function realization, etc. of the edge of the electronic whiteboard, and the real display area is much smaller than the product size.
Taking a product of a certain brand on the market as an example, the actual display area of an 89.3-inch electronic whiteboard projection is only 77.1 inches.
The size of the teaching all-in-one machine is calculated based on the size of the LCD screen. The real display and touch area are equivalent to the product size. For example, the display and touch area of the 86-inch teaching all-in-one machine are both 86 inches. With the same size, the display area of the teaching all-in-one machine is much higher than that of the electronic whiteboard, that is, the display area of the teaching all-in-one machine of smaller size is equal to that of the large-sized electronic whiteboard.
The viewing angle of the teaching all-in-one machine is as high as 178°, which is much higher than that of the electronic whiteboard.
The viewing angle refers to the angle at which the user can clearly observe all the content on the screen from different directions. The larger the viewing angle, the larger the range that the user can see. Under normal circumstances, the viewing angle of the teaching all-in-one machine is as high as 178°, which is much higher than the viewing angle of the projection whiteboard, so that every corner of the classroom can get the best visual experience. Clearly, this problem can only be alleviated by expanding the area of the whiteboard, so there are greater requirements for the area of the whiteboard.
The resolution of the teaching all-in-one machine is much higher than that of the electronic whiteboard
From the perspective of resolution, the current projection whiteboard for educational applications is generally 1024X768 or 1280X800, while the resolution of the teaching all-in-one machine is generally 1920X1080 (digital high-definition), and most of them can reach 4k resolution above 75 inches. Therefore, under the same screen size, the integrated teaching opportunity will present more details, and the colors will be more saturated and sharp, and the visual experience will undoubtedly be better in the actual teaching scene. On the other hand, due to the low inherent resolution of electronic whiteboards, the problem of rough and not delicate images becomes more and more prominent. In order to ensure the normal viewing of display devices, indoor light sources must be turned off and outdoor light sources must be shielded. However, such a teaching environment is harmful to teachers and students. Eye health is extremely disadvantageous. It can be seen that compared with the electronic whiteboard, the teaching all-in-one machine is much better in terms of viewing angle, contrast, color gamut coverage, resolution, etc. From the actual display effect, the smaller-sized teaching all-in-one machine can complete the Display requirements for much larger electronic whiteboards. It can be seen that the two standards regarding size are completely different and cannot be confused.
