The design of wireless character transmission device

This design is a wireless transmission device, the control system with single chip microcomputer MPC89E52AE is used to store Chinese character lattice information. Chinese characters are launched by the buttons and TXD with SCM at the frequency of 27MHZ.The receiver system decodes and receives the transferred character lattice information and the characters will be displayed on the LCD according to the lattice information. In this way the wireless characters transmission could be realized. In order to increase the transmission distance, we use wire to improve the communication distance with the little power as possible. And we utilize the sum check function to measure error code rate.