Original 1990 Adobe Photoshop source code released
In a blast from the past, the Computer History Museum has released the original source code to the 1990 version 1.0.1 of Photoshop with the permission of Adobe Systems Inc.
The Computer History Museum says:
“All the code is here with the exception of the MacApp applications library that was licensed from Apple. There are 179 files in the zipped folder, comprising about 128,000 lines of mostly uncommented but well-structured code. By line count, about 75% of the code is in Pascal, about 15% is in 68000 assembler language, and the rest is data of various sorts.”
The first ever version of Photoshop was released in 1988, and was the demo and first known copy of the software, but was not released publicly. It was developed by brothers Thomas and John Knoll, and was originally called ImagePro before they realised that the name had already been taken. The program was renamed Photoshop, and the name stuck.
After demonstrating the software to Apple and Adobe in 1988, Adobe bought the license to distribute in September of that year. In 1990, version 1.0.1 was released for Macintosh exclusively. It was the fourth ever version of Photoshop.
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