1, to clear the nature of the source to be displayed according to the nature of the source, the projector can be divided into ordinary video machine, digital machine 2 categories. When only full TV signals are displayed, such as karaoke halls playing video tapes, ordinary video machines can be selected. To display the signal output by VGA card, digital machine can be selected. And NEC

In recent years, the off-line demonstration function, which is more popular in the business projector market, is gradually being diluted and replaced by the wireless connection function. Because after the projector has added a wireless connection, it not only improves work efficiency during the demonstration process, but also makes the entire demonstration process without any complicated settings, making it more convenient to use. According to the PMA

In recent years, the domestic projector market has developed rapidly, and household mini-projectors have received more and more consumer attention. Coupled with the maturity of micro-projection technology, it has gradually contributed to the entry of micro-projectors into the home market. According to statistics, mini-projectors in January 2013, the domestic projector market mini-projection agency