Turbo Pascal was an integrated Pascal development system sold by Borland International, first released in November 1983. It combined an editor, a compiler, and a run environment in one small program. The Turbo Pascal Reference Manual describes it as designed “to meet the requirements of all categories of users” and as offering “compilation and execution times second to none,” with a “built-in editor” that was “a screen-editor specifically designed for the creation of program text.”
The product ran on the dominant small-computer operating systems of its day. The same manual states that it covers “three slightly different TURBO Pascal implementations, CP/M-80, CP/M-86, and MS-DOS/PC-DOS,” giving it broad reach across both the older CP/M machines and the newer IBM PC and compatibles.
What made Turbo Pascal revolutionary was the combination of speed, integration, and price. Compilation happened in memory rather than through slow swapping to disk, and the whole environment was small and immediate. Niklaus Wirth, writing about the microcomputer era, recalls that universities had built tools around a portable Pascal compiler and distributed it cheaply, and that “so did the Borland company with its version of compiler. This was at a time when other compilers were expensive software, and it was nothing less than a turning-point in commercializing software.”
By making a professional-grade compiler affordable and pleasant to use, Turbo Pascal brought serious programming tools to hobbyists, students, and small developers. It launched Borland as a company and helped popularize the idea of the integrated development environment that later tools would build on.