Abstract: This paper gives some methods to solve three key problems in designing the software of JBYQC(JB satellite structural optimization). The problems are: (1)How to layout the man-machine interactive screens, (2) How to integrate two modules written by different computer languages,(3)How to transfer the data between two modules written by different computer languages.These methods are simple and reliable. Although JBYQC is used in IBM-PC/AT or XT microcomputer, these methods can be generalized to other CAD softwares.

Key words: man-machine interaction, software integration, data transference