Since the first versions didn't have online help, copy protection was effectively enforced by possession of the Turbo Pascal reference manual (pictured above). may be freely moved from one computer location to another'. Turbo Pascal came with the famous 'Book License': 'You must treat this software just like a book. Turbo Pascal is generally considered to be the first popular Integrated Development Environment (IDE) of any type.Īs an additional selling point against the bigger vendors, Turbo Pascal disks came with no copy protection of any sort.

Instead of selling the kit through established sales channels (retailers or resellers), his new tool would be sold inexpensively via mail-order. Kahn's idea was to integrate these separate functions in a programming toolkit, have it run with much better performance, and charge one low price for it all. Vendors of software development tools aimed their products at professional developers, and the price for these basic tools plus ancillary tools like profilers ran into the hundreds of dollars. This process was the cumbersome product of the extremely limited resources of the early IBM PC models. For example, the Microsoft Pascal system consisted of two compiler passes and a final linking pass (which could take minutes on systems with only floppy disks for secondary storage). They all made C compilers (and some made Pascal compilers), which all worked in a similar fashion. In the IBM PC market of the early 1980s, the major programmer tool vendors included IBM, Microsoft, and Lattice. This cycle was the result of limited computer power and small amounts of memory. Programmers wrote code in a text editor, a compiler created object code from source (often requiring multiple passes), and a linker combined object code with runtime libraries to produce an executable program. Historically, the vast majority of programmers saw their work flow in terms of the edit/compile/link cycle, with separate tools dedicated to each task.

Philippe Kahn first saw an opportunity for Borland, his newly formed software company, in the field of programming tools.

2.5 Turbo Pascal 7 and Borland Pascal 7.

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