A science project that Apple co-founder Steve Jobs built for his 8th-grade science fair sold at auction for $34,375.
Jobs was attending Cupertino Jr. High when he designed the project, which is titled “What is the SCR?” The lot includes a display board built from plywood with three explanatory panels and a 10-page report with the same title.
The left panel has a wooden model of a “typical silicon-controlled rectifier with its four alternate layers of P- and N-Type semiconductor material,” while the center test circuits demonstrate the basic principles and characteristics of the silicon-controlled rectifier, as well as how it
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