What is BAS? What Opens a BAS? File Format List from WhatIs.com

File Extension

BAS File Format

BASIC source code

BAS is a file extension for a source code file format used by BASIC (Beginners All-purpose Symbolic Instructional Code), an early programming language that is still among the simplest and most popular of programming languages.

Originally designed as an interactive mainframe timesharing language by John Kemeney and Thomas Kurtz in 1963, BASIC became widely used on personal computers everywhere. On IBM's first "family" computer, the PC Jr, a BASIC cartridge was a popular add-on.

Because of its simplicity, BASIC has frequently been used in teaching the introductory concepts of programming with a working language. One popular version of BASIC is QBASIC.  Visual Basic adds object-oriented features and a graphical user interface (GUI) to standard BASIC.

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Learn more about BAS files:

SearchDataCenter.com has collected learning resources on topics related to mainframes.

Wikipedia has an entry on BASIC.

Search for answers to Visual Basic- related questions at IT Knowledge Exchange.

This was last updated in August 2010
Editorial Director Margaret Rouse

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