... Drumless fully electronic control system, cylinder is driven by brushless motor.2 UPS non power off system ... dynamic yarn system.8 Elastic band is controlled by stepping motor, can knit different sizes legs of ... , length, size, quantity, pattern, working step by the computer system.12 Large memory capacity, can store ... use, and equipped with powerful tools.2 Windows 95/ 98/ NT/ ME/ XP is compatible.3 PIC ...