Development of a new column design software using visual basic

A new column design software, TCD, was developed using visual basic for windows. The TCD interfaces are very friendly to facilitate communication between the user and the computer. TCD can be used not only to design new columns, but also to check old columns for retray application. TCD can be easily learned and mastered. Several design examples are using TCD to display the advantages of TCD. This paper introduces the interface design process, functions and advantages of TCD.