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#lisa

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Michael Engel

A lot of early software for #apple|s #Lisa and #Macintosh computers was written in Pascal, including most of the Lisa operating system and applications.

Niklaus Wirth not only invented the language, but he also contributed to Clascal, Apple's object oriented Pascal variant. His help was recruited by Larry Tesler, who not only worked on the Lisa OS, but also on Smalltalk at Xerox PARC and later on the Apple Newton.

The Lisa OS source code is available from the CHM:
computerhistory.org/blog/the-l

CHM · The Lisa: Apple's Most Influential FailureCHM publicly releases the source code to Apple's Lisa computer, including its system and applications software.
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