Most Singer machines (electronic machines) can be upgraded to work with the SuperbaKnit interactive knitting program, and with DesignaKnit.
There are 2 versions of SuperbaKnit: with Interface-A and with Interface-B. An overview what interface is required can be found here: http://www.superbaknit.nl/dk/superbaknit-en.htm
General information on SuperbaKnit here:  https://superbaknit.nl/       From there you can find also manuals under download.
Pricing indication for SuperbaKnit and accessories:  https://ibab.nl/ibb/en/index.html
regards   Gus