BASIC (Beginner’s All-purpose Symbolic Instruction Code) was designed to make computing accessible to non-scientists, evolving from a simple teaching tool into the foundational language of the personal computer revolution. 

The Academic Era (1964–1974)

• 1964: Invention at Dartmouth. John Kemeny and Thomas Kurtz created BASIC at Dartmouth College to allow students in non-technical fields to use computers.
• 1964: First Execution. The first BASIC program ran on 1 May 1964, on a GE-225 mainframe.
• Philosophy of Simplicity. It featured an intuitive, English-like syntax and was originally a “compile-and-run” language rather than a slow interpreter.
• Time-Sharing. BASIC was designed for the Dartmouth Time-Sharing System (DTSS), allowing multiple users to program simultaneously from different terminals. 

The Home Computer Revolution (1975–1980s) 

• 1975: Altair BASIC. Bill Gates and Paul Allen developed a BASIC interpreter for the MITS Altair 8800, which became Microsoft’s first product.
• The “De Facto” Standard. By the late 1970s, BASIC was pre-installed in the ROM of almost every major home computer, including the Apple II, Commodore PET, and TRS-80.
• Interpreted vs. Compiled. To save memory (often limited to 4KB), these versions were typically “interpreted,” meaning the computer translated code line-by-line during execution.
• Hobbyist Culture. Magazines and books published “type-in” programs, allowing millions of users to learn coding by manually entering BASIC code. 

The Professionalization & Decline (Mid-1980s–1990)

• Structured Evolution. Microsoft released QuickBASIC (1985), which introduced structured syntax (removing the need for line numbers) and a compiler for faster performance.
• Rise of C and Pascal. Professional developers began shifting toward more powerful languages like C and Pascal as hardware became capable of supporting them.
• Shift to Applications. As pre-written commercial software became common, the average user stopped writing their own programs in BASIC. 

The Visual & Enterprise Era (1991–Present)

• 1991: Visual Basic (VB). Microsoft combined BASIC with a graphical user interface (GUI) designer, allowing developers to “drag and drop” buttons and forms.
• Dominance in Business. By 1998, an estimated two-thirds of Windows business applications were built using Visual Basic 6.0.
• 2002: Visual Basic .NET. Microsoft transitioned the language to the .NET framework, turning it into a fully object-oriented language.
• Modern Status. While C# has surpassed it in popularity, VB.NET remains a stable, maintained language used heavily for maintaining legacy systems and Office automation. 

BASIC programming language timeline history by year