Abstract
Quality control is essential for a software development, and a quality of this control itself determines a quality of software developed. On this account, "the absolute defect-less production control" is necessary for planning and production processes, and "the absolute defect detection control" is necessary for a testing process. In order to enhance "the absolute defect detection control", our company has been promoting a digital quality control, a quality control management technique by numerically inspecting and analyzing the project performance, since year 2000. This report introduces the digital quality management that applies the quality control support system.