Memory holds both instructions and data, and CPU will keep fetching and interprests intstructions that read/write data

Registers: work space

• read content from memory and store them in registers, then the instructions will perform operations on the registers and store the result of operation back to the memory
• Special Registers:

  • ESP: stack pointer

  • EBP: frame base pointer

  • ESI: source index

  • EDI: destination index

  • EFLAGS register: another special register that track the current CPU status