QuickBASIC

Microsoft QuickBASIC (QB or QBASIC) is a descendant of the BASIC programming language that is developed by the Microsoft Corporation for use with the MSDOS Operating System. It was loosly based on Microsoft BASICA but added improved graphics and disk support. Microsoft released the first version of QuickBASIC on August 18, 1985 in the form of a 5.25" floppy disk. QuickBASIC came with its own integrated editor (IDE). Line numbers were no longer needed since users could insert and remove lines directly in the editor. Microsoft's "PC BASIC Compiler" was included which could be used to compile programs into DOS executables. The editor also had an interpreter build in which would run the program without leaving the editor at all, and could be used to debug the program before creating an executable file.