He reported six months later that the figure had risen to "more than 400,000 copies in a marketplace that had been estimated as having only 30,000 potential buyers". ==Versions== ===CP/M and DOS versions=== ====Version 1==== The Turbo Pascal compiler was based on the Blue Label Pascal compiler originally produced for the NasSys cassette-based operating system of the Nascom microcomputer in 1981 by Anders Hejlsberg.
may be freely moved from one computer location to another, so long as there is no possibility of it being used at one location while it's being used at another." ==Reception== Jerry Pournelle of Byte magazine wrote in February 1984 that Turbo Pascal "comes close to what I think the computer industry is headed for: well documented, standard, plenty of good features, and a reasonable price".
He noted that the software's quality and low price had been especially surprising after the "JRT Pascal fiasco", and stated that even at the new higher $69.95 price, version 3.0 was "probably still the best software deal on the market". PC Magazine was similarly complimentary in November 1984, stating that "nothing like Turbo Pascal has ever existed for PC-DOS before".
Borland itself produced a small application suite called Sidekick that was a TSR letting the user keep a diary, notes, and so forth. ====Version 2==== Version 2, released a few months later on 17 April 1984, was an incremental improvement to the original Turbo Pascal.
Bruce Webster also praised the language in the magazine, stating in August 1985 that Turbo Pascal "is best known for its small size, incredible compile speeds, and fast execution times".
He concluded that Turbo Pascal was "a bargain that shouldn't be passed up". Despite finding what it described as "a serious bug" in version 3.0, and decreased compatibility with PC clones, the magazine in February 1986 stated that "it is hard to avoid recommending Turbo to anyone who wants to program in Pascal", citing improved speed and graphic routines.
When reviewing four other Pascal compilers in December 1986, Byte described Turbo Pascal as "practical and attractive to programmers at all levels of expertise".
The .COM programs could be overlaid effectively using virtual memory if they would not otherwise fit in memory. Version 2 for CP/M-80 only ran on Z80-based CP/M machines. ====Version 3==== Version 3 was released on 17 September 1986. Borland also offered TURBO-87 which required an 8087 maths coprocessor (or later compatible).
Turbo Pascal was superseded for the Windows platform by Delphi; the Delphi compiler can produce console programs and graphical user interface (GUI) applications, so that using Turbo and Borland Pascal became unnecessary. ===Turbo Pascal for Macintosh=== Borland released Turbo Pascal for Macintosh in 1986.
The standard Turbo Pascal offered real data types offering a range of 1E-63 to 1E+63 to 11 significant figures. Turbo Pascal 3 supported turtle graphics. Borland also offered a BCD version (TURBOBCD) which offered the same numeric range as real data types but to 18 significant figures. ===DOS versions=== ====Version 4==== Released on 20 November 1987, Version 4 was a total rewrite, with both look and feel and internal operation much changed.
In 1987, when Turbo Pascal 4 was released, Modula-2 was making inroads as an educational language which could replace Pascal.
The review stated that the IDE that simplified the edit-compile-run-debug loop made Turbo Pascal accessible to new programmers like BASIC. Byte in 1989 listed Turbo C and Turbo Pascal as among the "Distinction" winners of the Byte Awards.
Most of the downloads are still available on the successor website of Embarcadero Technologies. ==Successors== By 1995 Borland had dropped Turbo/Borland Pascal and replaced it with the rapid application development (RAD) environment Borland Delphi, based on Object Pascal.
Macintosh support was dropped soon after. ===Freeware releases=== Borland released several versions of Turbo Pascal as freeware after they became "antique software" (abandonware), with 1.0 for DOS on 1 February 2000, 3.02 on 10 February 2000, 5.5 on 21 February 2002, Turbo Pascal 7.01 French version in year 2000.
Macintosh support was dropped soon after. ===Freeware releases=== Borland released several versions of Turbo Pascal as freeware after they became "antique software" (abandonware), with 1.0 for DOS on 1 February 2000, 3.02 on 10 February 2000, 5.5 on 21 February 2002, Turbo Pascal 7.01 French version in year 2000.
It was the state-approved educational programming language for all South African secondary schools until 2002.
All text is taken from Wikipedia. Text is available under the Creative Commons Attribution-ShareAlike License .
Page generated on 2021-08-05