Certain integrated circuits, particularly those with performance characteristics that deviate significantly from typical expectations or possess undocumented functionalities, are sometimes informally referred to with a specific term. This nomenclature often arises due to the perceived unpredictable or seemingly magical behavior these components exhibit. A common example would be a microcontroller that operates at a clock speed far exceeding its datasheet specification, or a memory chip with hidden sectors or encryption capabilities.
The appeal of such devices lies in their potential for unique applications and performance gains. Experimenters and hobbyists may seek them out to push the boundaries of hardware capabilities, discover undocumented features, or exploit hidden functions. Historically, interest in such components has been fueled by rumors, anecdotes, and occasional documented instances of unusual performance characteristics or undocumented capabilities, contributing to an aura of intrigue and a desire to uncover their true potential.