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Keil development environment and DS18B20 sensor digital thermometer 51c language program, you can achieve real-time collection of ambient temperature accuracy of 0.1 ° C by 1602. In which the information collection program timing to be optimized for efficient execution. Package including the source program+DS18B20 manual+1602 LCD manual, the 1602 driver and DS18B20 information collection procedures are header files embedded in the form, which could be embedded in the other 51 single-chip program.