A single machine head with three systems, this series comprises two types of fully automatic computerized flat knitting machines with and without bottom plate devices. Utilizing digital technology, it achieves functions such as stitch reversal, stitch hanging, hole picking, inlaying, visible and invisible stitch picking, and other regular pattern knitting on the flat knitting machine. It can knit basic knitting structures (such as flat knitting and single-sided knitting) as well as multi-color irregular patterning, twisting patterns, and other weft knitting structures. Suitable for knitting garments, scarves, hats, and clothing accessories using various materials including genuine yarn, silk, synthetic fibers, wool, acrylic, blended fibers, and yarn.