The design and implementation of a wireless data transceiver

We designed a wireless data transceiver which is based on ATMEGA128 controller and SIM900A. By using the SIM900A chip, it can send data wirelessly through GSM/ GPRS, and by using the ATMEGA128 controller, it can process the data, order and control SIM900A, and then we can transfer data to the remote terminal wirelessly. According to a large number of experiments, we know that: this system is stable, at low cost, easy to take the secondary development, and it will be applied widely in the further.