Consider windows 3.0 was released on 1989 and according to this: https://en.wikipedia.org/wiki/Windows_3.0 https://en.wikipedia.org/wiki/Windows_3.0 Windo

Consider windows 3.0 was released on 1989 and according to this: https://en.wikipedia.org/wiki/Windows_3.0 https://en.wikipedia.org/wiki/Windows_3.0 Windows 3.0 HW requirements was 8088 with 386K-2MB of memory. The word 1.0 can be run on that OS with such limited resource, that was a very impressive achievements. I assume non-trivial amount of time was probably involve on design/debugging all the GUI features around such limit amount of memory. Today's it would be very hard to find anything non-trivial that can be run with 2MB of memory - not to mention working word processor with OS/GUI.