Now the fastest growing technology is no doubt electronic technology, this can be seen from the increasing number of advanced electronic products we come into contact with in our daily lives. Mobile phones have evolved from the big bricks that could only make calls more than 10 years ago to the card-sized devices we have now that can play music, watch TV, send MMS, and surf the Internet. Computers have also evolved from being as large as a room to now being handheld, with functions that are almost limitless. However, although mobile phones and computers can be made very small, it is very strenuous to look at a small screen. And now holographic technology is developing rapidly. This 3D desktop computer uses holographic technology, what we see is no longer a physical computer screen, but a virtually projected image, and it is a large screen display, no longer limited by the problem of the general computer display effect being too small. Perhaps in the future, computer screens or mobile phone screens will be replaced by this kind of holographic projection technology, so that we not only see more realistic images, but are also not restricted by screen size.