nb

It came with MSDOS 5.0-6.22. Like the versions of BASIC that came with DOS before, it was an interpretter-only program, meaning that you had to have QBASIC to run your QBASIC programs. In reality, however, QBASIC pre-compiled your program unlike previous versions of BASIC, resulting in much improved performance. IIRC, QBASIC was a stripped down version of QuickBASIC, which included exe compilation.