You don't need to learn assembly to learn how computer works(if you mean comp. arch). Assembly is already very high level language and hides most of the things

You don't need to learn assembly to learn how computer works(if you mean comp. arch). Assembly is already very high level language and hides most of the things that you learn by actually studying computer architecture. Reading the intel's first couple volumes of manual is a good idea, if you don't know where to start.