Don't forget copper interconnects for ICs. https://www.chiphistory.org/ibm-s-development-of-copper-interconnect-for-ics https://www.chiphistory.org/ibm-s-develo

Don't forget copper interconnects for ICs. https://www.chiphistory.org/ibm-s-development-of-copper-interconnect-for-ics https://www.chiphistory.org/ibm-s-development-of-copper-inte...