So I also teach this university course about the history of technology, where students also learn how to use spreadsheets.
This semester, some of my students were surprised to learn that (a) spreadsheets existed before Windows 🤨 and (b) even a DOS spreadsheet could do everything we learned on the modern spreadsheets, just differently in some cases.
In this demo, we'll compare LibreOffice Calc on Linux and Quattro Pro on DOS.