> For the complete documentation index, see [llms.txt](https://wonjoon.gitbook.io/joons-til/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wonjoon.gitbook.io/joons-til/books/the-secret-of-the-underlying-computer/6.-computer-exist-with-zero-i-o.md).

# 6. Computer Exist with Zero I/O?

- [6.1 I/O in CPU](https://wonjoon.gitbook.io/joons-til/books/the-secret-of-the-underlying-computer/6.-computer-exist-with-zero-i-o/6.1-i-o-in-cpu.md): 6.1 CPU는 어떻게 입출력 작업을 처리할까?
- [6.2 CPU while disk on I/O process](https://wonjoon.gitbook.io/joons-til/books/the-secret-of-the-underlying-computer/6.-computer-exist-with-zero-i-o/6.2-cpu-while-disk-on-i-o-process.md): 6.2 디스크가 입출력을 처리할 때 CPU가 하는 일은 무엇일까?