Little curiousity Windows

Question

How did Bill Gates create Windows , without any software or something like that , or even a computer??
What did he used?

Answer 1

His superpower: richness,

He bought It and rebranded.

Answer 2

well, it's simple. he didn't. thousands of people who work there develop and improved it with time.

Answer 3

There was a computer and there was an OS. Windows started as a graphical interface shell built on top of MS-DOS and it enabled mouse input. MS-DOS is Written in · x86 assembly.