Table 1: Achievement of the testee who used this system.
Table 2: Achievement of the testee who used printed manual.
Table 1 and Table 2 indicate the summary about the average work time and average number of errors of the two groups of testee. The average work time of the testee who used this system was about 1/3 shorter that one of the testee who used the printed manual.
Also, the average number of total error of the testee who used this system was exactly 0. There was 0.6 times error per person who used the printed manual. Major reason was that the process control PC in the proposed system did not proceed the inspection procedure unless the measured value by the virtual instruments became a designated value.