单片机驱动bs18b20温度传感器程序 驱动12864液晶显示程序 iic总线读写eeprom程序 usart串行传输数据程序 ad转换显示在液晶程序-Single-chip temperature sensor driver program bs18b20 12864 LCD driver program to read and write eeprom program usart iic bus serial data transfer program to convert the liqu