Asynchronization system, means the computr edon't need to always keep the connection with the led screen for sending the data, just when need to change the contents to show in the led scren, then need to connect to the led screen. After that, the led screen can work without the computer.

The Asynchronization system may need when the following conditions:

1. The led screen is not too big.

2. Need the led screen run without computer.

3. Need special communication method for sending program, such as Lan, wireless LAN, RF, 3G, GPRS.