The Computers: Programming: Languages: (Smalltalk Languages )

Smalltalk is and was a breakthrough combination programming language and operating system, created between 1972 and 1980 at the legendary Xerox Palo Alto Research Center: PARC. It was the first fully (pure) object-oriented language, and thus is a grandparent of all OO languages. The main language influences inspiring and informing the creation of Smalltalk were Ivan Sutherland 's Sketchpad graphics program-language, Simula, Lisp and Seymour Papert 's Logo dialect, and ML. Smalltalk is far more than a programming language only. It is also a full, powerful operating system (OS). Many traits make it so. All original Smalltalks ran on bare hardware, with no intervening OS, and some still do. Smalltalk Languages Programming Computers.

Smalltalk is an object-oriented, dynamically typed, reflective programming language. Smalltalk was created as the language to underpin the "new world" of computing exemplified by "human–computer symbiosis. (wikipedia)