Smalltalk language is an object-oriented programming language that has a standard set of rules. It is a recursion-based language within a computer. Based on possibilities within the computer, the recursion is designed using the object of Smalltalk. A Smalltalk object can perform three tasks:

(i) Hold of state (reference)

(ii) Message Receiving

(iii) Message Sending (either to itself or other objects)

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April, 1972