A chinese microcomputer program which analyzes the minimal inhibitory concentration (MIC) of antimicrobial susceptibility and presents the results in tabular and chart forms is described. This program also computes MIC50, MIC90, and geometric mean MIC and displays these values for a large number of antimicrobials in a summary table. The set of MIC values used for different groups of organisms or antimicrobial agents can be altered without changing the program. A text file of the results is written into the disk to enable editing before final presentation. The program features several major enhancements over previously published ones.