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Software prototyping is the activity of creating prototypes of software applications , i.e. , incomplete versions of the software program being developed .. software program. Software. prototyping. prototyping. It is an activity that can occur in software development and is comparable to prototyping as known from other fields , such as mechanical engineering or manufacturing .. software development. Software development process. prototyping. prototyping. mechanical engineering. mechanical engineering. manufacturing. manufacturing. A prototype typically simulates only a few aspects of , and may be completely different from , the final product .. prototype. prototype. Prototyping has several benefits  : the software designer and implementer can get valuable feedback from the users early in the project .. The client and the contractor can compare if the software made matches the software specification , according to which the software program is built .. software program. Software. software specification. Program specification. It also allows the software engineer some insight into the accuracy of initial project estimates and whether the deadlines and milestones proposed can be successfully met .. The degree of completeness and the techniques used in prototyping have been in development and debate since its proposal in the early 1970s .. prototyping. prototyping