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jleightcap
@jack@leightcap.com  ·  activity timestamp last month

computer architecture being bootstrapped pre-CAD. rubylith operators (ca. 1970) hand-drafting photographic lithography masks.

#computerarchitecture #retrocomputing

Computer History Museum

Operators hand cut IC designs onto rubylith film, which was then optically reduced to create a photographic mask.

two people stand around a light table, cutting a dense geometric pattern into a large semi-transparent ruby-colored sheet.
two people stand around a light table, cutting a dense geometric pattern into a large semi-transparent ruby-colored sheet.
two people stand around a light table, cutting a dense geometric pattern into a large semi-transparent ruby-colored sheet.
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