Ken Thompson and Dennis Ritchie at a PDP-11. Peter Hamer [CC BY-SA 2.0] Last week the computing world celebrated an important anniversary: the UNIX operating system turned 50 years old.

Now, [Seth] is calling it: his AT&T 3B2/400 emulator is almost complete, resurrecting an ancient machine from the dead by studying UNIX source code. The architecture of this computer is unlike ...

Kernel and System Architecture The architecture of the kernel—the core of an operating system—plays a crucial role in defining its behavior and capabilities. UNIX systems typically employ monolithic ...