STC STC89C52 is an 8-bit microcontroller with low power consumption and high cost performance, which is one of the smallest on-chip system computers. STC89C52 is an 8 kb system similar to programmable flash memory and also used as MCS-51 classic kernel. Compared with the traditional 51 series single chip microcomputer, it has made many improvements and played other functions of the chip. STC89C52 program storage space with 8 k bytes and can download serial port for use. STC89C52 series of microcontrollers are selected because they can effectively use full duplex asynchronous serial