The memory map of the original 8086 computer with its base and extended memory made the original PC rather straightforward, but also posed countless issues for DOS-based applications as they tried ...

DOS was text based and Unix is inherently text-based in contrast to Windows and Mac, which are graphics based. Text-based computer screens display a fixed set of rows and columns, typically ...

It’s a piece of common knowledge, that MS-DOS wasn’t capable of multitasking. For that, the Microsoft-based PC user would have to wait for the 80386, and usable versions of Windows.