FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Smalltalk is a purely object oriented programming language (OOP), created in the 1970s for educational use, specifically for constructionist learning, at Xerox PARC by Learning Research Group (LRG) scientists, including Alan Kay, Dan Ingalls, Adele Goldberg, Ted Kaehler, Diana Merry, and Scott Wallace.

Detailed explanation-2: -Simula (1967) is generally accepted as being the first language with the primary features of an object-oriented language. It was created for making simulation programs, in which what came to be called objects were the most important information representation.

Detailed explanation-3: -Smalltalk was a revolutionary system developed by the Learning Research Group (LRG) at Xerox PARC in the 1970s, led by Alan Kay. Smalltalk was comprised of a programming language, a development environment, and a graphical user interface (GUI), running on PARC’s groundbreaking Alto computer.

Detailed explanation-4: -Object-oriented programming began with the Simula language (1967), which added information hiding to ALGOL. Another influential object-oriented language was Smalltalk (1980), in which a program was a set of objects that interacted by sending messages to one another.