The lineage is pretty clear, especially if you're looking at the early DOS versions and the computers it ran on. DOS basically added a few things, and the hardw

The lineage is pretty clear, especially if you're looking at the early DOS versions and the computers it ran on. DOS basically added a few things, and the hardware progressed a lot. But in the Turbo Pascal 3 era, the differences weren't that high. "Big" things were: - no sub-directories - no relocatable executables (ie. only .COM, no .EXE) - no common, advanced graphic standard So if you're running WordStar or TP3 in black-and-white text mode, you might not be able to tell the difference. If you're thinking of color text modes (TP 5.5, QBASIC, Word 5) or VGA/EGA games when "DOS" is mentioned, then that's the era beyond that.