In addition to safety, you must also be cautious when using Laser pointer. In art galleries, because some paintings may be afraid of light, it is not suitable to use laser pointers. In the zoo, do not use laser pointers to avoid fear of animals. Astronomy enthusiasts should pay attention when using the laser pointer to point to the stars. Do not use the pointing star frequently for a long time, so as not to hinder others' gaze and photography. In crowded public places, in order to avoid accidental injury to others, you should stop using the laser pointer. Some high-power laser pointers have obvious thermal effects, so they cannot be used continuously for a long time, especially solid-state lasers that are sensitive to temperature.
Another technological innovation is the laser engraver that can program and operate computers. When I first saw this product, the new technology left a deep impression on me. The little guy is great. It consists of a locator and a laser pointer. You can use the laser pointer directly. It can draw and write remotely, directly use a laser pointer to write on a projection screen or a projection wall, or operate a computer. Many shortcut keys are integrated on the laser pointer. The author has not carefully experienced this multi-function, but realized the three functions of remote control drawing and writing, screen drawing and writing, and computer operation. Except for the relatively slow speed of screen drawing and writing tracking, other functions are normal. Currently, such products on the market mainly include ViewPen and Skywalker electronic whiteboards. Obviously, it is a blue laser pointer. I don't know why it is called an electronic whiteboard. However, the product is expensive, ranging from 3,000 yuan to 7,000 yuan.
When the user speaks key or important content, he no longer needs to walk to the projection screen "zero distance" with his hands.
The inconvenience caused by the traditional manual mouse operation completely gets rid of the user's voice restriction, and the user cannot leave the platform to give a speech.It can adapt to the current multimedia presentation and presentation needs, maximize the user's presentation effect, and improve the use level and work efficiency of information-based modern presentation tools.