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A closeup of the chip showing a bunch of vertical lines, the chip's metal layer. The Hebrew letters are mostly obscured with just some darker horizontal regions.

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A closeup of the chip showing a bunch of vertical lines, the chip's metal layer. The Hebrew letters are mostly obscured with just some darker horizontal regions.
https://assets.oldbytes.space/assets.oldbytes.space/media_attachments/files/110/849/434/223/612/416/original/bf1102ea8443f645.png

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Ken Shirriff (kenshirriff@oldbytes.space)'s status on Tuesday, 08-Aug-2023 02:12:27 JST Ken Shirriff
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The 8088 is constructed from a silicon wafer with polysilicon wiring and a single metal layer on top. (Modern chips can have a dozen layers of metal.) The metal obscured the name, making it unreadable on the chip until I dissolved the metal with acid.

In conversation Tuesday, 08-Aug-2023 02:12:27 JST from oldbytes.space permalink