In Book > Lessons > Lesson 2 there are several models of computer discussed, as well as the function of the CPU, RAM and the Hard Drive (HDD). Those videos demonstrate that all data on a computer is stored in binary form- ones and zeros. There are also different models shown to represent a computer, such as the input > process > output model. Another such model is the hierarchical model. Both are different views of the same thing, and both are relevant.
System Architecture, hierarchy, modularisation
IP/OP model
Lang popularity
code on metal
Machine Code
Assembler, Interpreter, Compiler