Radia Perlman's "Button Box" controls turtle with Logo subset TORTIS

Nice history here of Logo turtles:
1969 - The Logo Turtle - Seymour Papert et al

An image used on the cover of Papert’s book “Mindstorms”:


Perlman worked in the MIT Logo group which was part of the AI lab. The linked article also has some color photos of the button box. Here are some more.


I found the TORTIS source code, and Perlman gave me permission to put it online.

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Here’s Perlman’s memo about TORTIS:

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Excellent findings, many thanks!