Analyzing the vintage 8008 processor from die photos
IC

Analyzing the vintage 8008 processor from 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...

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Inside the 74181 ALU chip: die photos and reverse engineering
IC

Inside the 74181 ALU chip: die photos and 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...

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

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

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ST TL072 – dual JFET opamp die-shot
IC

ST TL072 – dual JFET opamp die-shot

A new die shoot from zeptobars.com. Die size 1547x1279 µm. ST TL072 - dual JFET opamp die-shot -...

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