Was a board/paper draftsman/designer pre-ACAD. Left that short career for 23+ years in USAF electronics. When I started using my own PC for drafting I migrated through floppy discs of ACAD Lite and Generic CAD (yes, that's its real name and was a great program, too). Finally found TurboCad and I still have it. Left Windows based version 10 for Mac OS based version. Be advised-they are very different but, nonetheless,I still would recommend the software. It's fairly intuitive which is good because I can come back to it after months of non-use and not have to navigate the learning curve hill again. Great bang for the buck.
Rich