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Free and open-source software portal; QB64 (originally QB32) [1] is a self-hosting BASIC compiler for Microsoft Windows, Linux and Mac OS X, designed to be compatible with Microsoft QBasic and QuickBASIC.
Later versions of Visual Basic did not include DOS versions, as Microsoft concentrated on Windows applications. A subset of QuickBASIC 4.5, named QBasic, was included with MS-DOS 5 and later versions, replacing the GW-BASIC included with previous versions of MS-DOS. Compared to QuickBASIC, QBasic is limited to an interpreter only, lacks a few ...
QBasic was intended as a replacement for GW-BASIC.It was based on the earlier QuickBASIC 4.5 compiler but without QuickBASIC's compiler and linker elements. Version 1.0 was shipped together with MS-DOS 5.0 and higher, as well as Windows 95, Windows NT 3.x, and Windows NT 4.0.
The original version was designed for memory-constrained systems and stored numbers in 32 bits (4 bytes), with a 23-bit mantissa, 1-bit sign, and an 8-bit exponent. Extended (12k) BASIC included a double-precision type with 64 bits.
QBasic 1.0 was included in MS-DOS 5.0, and in Windows NT 3.x and 4.0. These are three different compiles of the same: 5.00, 5.00a and WNT use different versions of QBASIC. IBM recompiled QBasic and included it in their IBMDOS 5.x, as well as OS/2 2.0 onwards. eComstation includes OS/2, and includes QBasic 1.0. There are four versions of this.
In 1991, 32 Bit Software Inc. (Dallas, Texas) bought the DOS version and expanded it. Zedcor concentrated on the Apple Mac market and renamed it FutureBASIC. ZBasic was very fast, efficient and advanced, with BCD math precision up to 54 digits. Zeus|Basic developed for Windows and Pocket PC by KRMicros (Kronos Robotics).
The GNU/Liberty Basic Compiler Collection (GLBCC), by Anthony Liguori, is a set of tools to compile Liberty Basic programs, runs on Windows and Linux systems, but the project has not been updated since 2001. In 2012 an alternative Windows implementation of Liberty BASIC, LB Booster (LBB), became available.
PureBasic IDE 5.10. PureBasic is a commercially distributed procedural computer programming language and integrated development environment based on BASIC and developed by Fantaisie Software for Windows, Linux, and macOS. An Amiga version is available, although it has been discontinued and some parts of it are released as open-source. The first ...
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BBB Rating of A+. 4.74 out of 5 stars. - Better Business Bureau