With proprietary software, the code used to create the application (or operating system) is not available for public usage or viewing.

An appendix covers how to write your own operating system for RISC-V in about 1,000 lines of code. Don’t speak Japanese? An English version is available free on the Web and on GitHub.

As well as a wealth of detailed information about how to write an operating system, Tanenbaum's book came with the source code for a small study system called Minix.

The Code Underneath the Code A modern computer's EFI, like BIOS in older computers, is the embryonic code that tells a computer how to launch its own operating system.

The Apple Lisa, released in 1983, was one of the first personal computers to come equipped with a graphical user interface, and soon the operating ...