Analyzing the vintage 8008 processor from die photos

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https://www.electronics-lab.com/analyzing-vintage-8008-processor-die-photos/

Ken Shirriff writes: The revolutionary Intel 8008 microprocessor is 45 years old today (March 13, 2017), so I figured it’s time for a blog post on reverse-engineering its internal circuits. One of the interesting things about old computers is how they implemented things in unexpected ways, and the 8008 is no exception. Compared to modern […]

Inside the 74181 ALU chip: die photos and reverse engineering

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https://www.electronics-lab.com/inside-74181-alu-chip-die-photos-reverse-engineering/

A detailed die photos and reverse engineering of the 74181 ALU chip by Ken Shirriff: What’s inside a TTL chip? To find out, I opened up a 74181 ALU chip, took high-resolution die photos, and reverse-engineered the chip.1 Inside I found several types of gates, implemented with interesting circuitry and unusual transistors. The 74181 was a […]

Schematic, Mask, and Die Shot of Intel’s 4004 CPU from 1971

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https://www.electronics-lab.com/schematic-mask-die-shot-intels-4004-cpu-1971/

Celebrating its 45th anniversary, adafruit stumbled upon these high-resolution images of Intel’s 1971-released 4004 CPU. Click any of the below images to view them at their maximum scale on the MIT domain: Schematic, Mask, and Die Shot of Intel’s 4004 CPU from 1971 – [Link]

ST TL072 – dual JFET opamp die-shot

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https://www.electronics-lab.com/st-tl072-dual-jfet-opamp-die-shot/

A new die shoot from zeptobars.com. Die size 1547×1279 µm. ST TL072 – dual JFET opamp die-shot – [Link]