Hacker News
- Calculator Construction Set https://www.folklore.org/StoryView.py?story=Calculator_Construction_Set.txt 18 comments
- Calculator Construction Set (1982) http://www.folklore.org/StoryView.py?project=Macintosh&sortOrder=Sort+by+Date&story=Calculator_Construction_Set.txt 22 comments
- The Original Macintosh: Calculator Construction Set http://www.folklore.org/StoryView.py?project=Macintosh&story=Calculator_Construction_Set.txt 14 comments