Great effort, but really still needs a bunch of work. In some places the sentences just don't make sense. I think in terms of CPU, a good starting point is

Great effort, but really still needs a bunch of work. In some places the sentences just don't make sense. I think in terms of CPU, a good starting point is the Von Neumann architecture which most computers are designed around. The current description of CPUs mix things up with OS concepts. You may want to look into things like memory management units ( MMU ) that builds on the basic Von Neumann architecture to provide "virtual memory" such that an OS can use it to provide process isolation that OS's can use. Also the more capable CPUs have what are often called "modes" (protected mode in x86, ARM have a similar thing) to isolate running programs from each other and be able to create rings for things like kernels and device drivers.