Conversation so far:
what is BASIC?
BASIC (Beginner's All-purpose Symbolic Instruction Code) is a family of general-purpose, high-level programming languages whose design philosophy emphasizes ease of use
when did Bill Gates develop BASIC?
In 1975 MITS released Altair BASIC, developed by Bill Gates and Paul Allen as the company Micro-Soft, which eventually grew into corporate giant Microsoft.
was Bill Gates able to secure a job because of inventing BASIC?
MITS hired Allen, and Gates took a leave of absence from Harvard to work with him at MITS in November 1975.

Question: did he further develop BASIC?
Self-contained rewrite: did Bill Gates further develop BASIC?