The microchip era may be ending – and wafer-scale systems could be what comes next

Nowhere is this transformation more visible than at Nvidia, whose valuation recently soared to about $5 trillion, making it the world's most valuable publicly traded company. Nvidia's flagship processors are intricate marvels. Each unit – encapsulated in a plastic package and interwoven with copper connections – contains up to 208 billion transistors.

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