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The first versions of both Visual Basic and Borland C++ were released in 1991. Turbo C 1.0 was in 1987. Maybe you are thinking of Turbo Pascal 1.0, released in late 1983, but I’d argue that one wasn’t confusing, if you were in the business of using early DOS at all.

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I used Turbo Pascal 2.0 in the early 1990's because that was the old version my dad happened to have. You could not just go online and find whatever latest version of software you wanted to.