Can someone tell me is the Janome Jem a computerized or mechanical machine. I am also looking for the best lightweight machine to take out for mainly straight stitching/piecing. I have a Bernina 830 Special Edition.it is fun and a challenging learning curve for me. It is not a machine I want to travel around to classes etc. thanks for your help and good luck to the gal who opened this thread. Linda "sassy quilter " .