Hardware

Cracking Open the IBM PC Jr.

Advanced Micro Devices

Before they went into the CPU cloning business, AMD made chips that supplemented the activity of the Intel 8088. The P8253-5 is a Programmable Interval Timer and the P255A is a Programmable Peripheral Interface.

About

Mark W. Kaelin has been writing and editing stories about the IT industry, gadgets, finance, accounting, and tech-life for more than 25 years. Most recently, he has been a regular contributor to BreakingModern.com, aNewDomain.net, and TechRepublic.