Application of DS1302 in CO_2 Enrichment Controller

DS1302 is a kind of integrated circuit with high performance and low power consumption which is made in America by Dallas company.In our study ds1302 was used in a CO2 enrichment controller used to release CO2 to greenhouse.DS1302 not only provide date and time for the system but also save important user date.When electric power was shut off DS1302 could go on working with backup power supply.User data could be saved in RAM of DS1302 and after electric power was recovered those data could be restored to MCU.With this way the system achieved high practicability and safety and was improved.