Abstract: In this paper, the microcomputer DB-BASIC system is constituted by connecting BASIC-80 language software to dBASEⅡdatabase system. It can be used both in storing a large amount of data and in tranferring them from one system to another.In applying this system to chemical thermodynamics, two groups of utility files have been presented to calculate the equilibrium constants in different temperature or state variants of non-ideal gas. The values of standard thermodynamics are selected from database. The same result can be obtained either by the computer or artificiality