Today I Learned (TIL)

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You learn something new every day; what did you learn today? Submit interesting and specific facts about something that you just found out here.

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bOt@zerobytes.monster

TIL that early semiconductors, before CAD, were made by hand drawing the circuit design on graph paper at an extremely enlarged scale, then cutting that design onto a film called Rubylith, which w... (www.asianometry.com)

submitted 2 months ago by bOt@zerobytes.monster to c/todayilearned@zerobytes.monster

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The original post: /r/todayilearned by /u/zahrul3 on 2025-02-03 09:15:46.

Original Title: TIL that early semiconductors, before CAD, were made by hand drawing the circuit design on graph paper at an extremely enlarged scale, then cutting that design onto a film called Rubylith, which was used to create the final photolithographic mask. Repeat for all layers on a chip.

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