I've been writing on CPU technology here at Ars for almost five years now, and during that time I've done my best to communicate computing concepts in as plain and accessible a manner as possible ...

In my previous article, Understanding the Microprocessor, I gave a high-level overview of what a microprocessor is and how it functions. I talked about the kinds of tasks it performs and the different ...

ALU (Arithmetic Logic Unit) is the fundamental unit of a microprocessor which performs all the basic operations based on the control input selection. There are separate units which work independent of ...

Guest author Ken Shirriff is a Silicon Valley-based computer enthusiast who enjoys reverse-engineering old chips and restoring classic equipment such as the Xerox Alto. Shirriff wrote the Arduino ...

The processors in today’s computers have grown tremendously in performance, capabilities and complexity over the past decade. Clock speed has skyrocketed, and size has dwindled, even as the number of ...

The 6502 was a ubiquitous microprocessor back in the 80s, powering devices such as the Apple II and the Nintendo Entertainment System. [Ken] took an in depth look at a small part of the processor: the ...