Based on GSM network wireless LED billboard
Abstract: The article has designed a wireless LED billboard system, based on the existing GSM network, with AT89S52 as the core control components, which is made up of wireless data-transmission chip nRF2401. The system can upload the information received to VB language program by means of the serial port so as to filter information and carry on the data storage and management with the database technology. In this way, it realizes the flexibility Changes of the contents of the billboard and display mode, as well as statistics and analysis in commercial information.
Key words: GSM Network; nRF2401; database; graphics dot-matrix; AT command