Answer
To answer your question with the annoying word "depends" is an understatement. All kinds of sewing machines do an amazing array of things, and some, like mine, are like the original.
In the beginning, sewing machines made only one kind of stitch. This is called the running stitch, or straight stitch, because the stitches run in one direction, one stitch in front of another. For a detailed description of how this basic stitch works, see "www.Howstuffworks.com/sewing-machine".
All machine stitches are based on the same formula, but the variety of stitches now available on the most sophisticated of machines are made possible by the "feed dog". That is the little teeth that move the fabric around, and the movable (zig-zag) needle, which can stitch in a side to side motion.
Some of the newer machines come with a set of "cams" that are put into the machines which control the pattern. Now, you can even purchase machines that can be programmed by means of an internal computer to provide actual pictures stitched onto your fabric.
For more information, including a history of sewing machines, see the excellent Wikipedia article, wikipedia.org.wiki/Sewing_machine
First answer by Yarnlady. Last edit by Yarnlady. Contributor trust: 228 [recommend contributor]. Question popularity: 12 [recommend question]





