The Bootstrap Load Home Back The Intel 4004 Microprocessor and the Silicon Gate Technology A testimonial from Federico Faggin, designer of the 4004 and developer of its enabling technology Quick Links:
Silicon Gate Technology
The Buried Contact
The Gilbert Hyatt Patent The Bootstrap Load
"an understanding of the physics of how devices work, because in a bootstrap load what you need to do is to always have a virtual junction, instead of a physical junction." (Faggin, in a 2007 oral panel interview with David House CHM), and he showed how to make bootstrap load devices without an extra masking layer.
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Original schematic of the 4004 showing bootstrap loads
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