Comment by ConceptJunkie

Beginners' All-Purpose Symbolic Instruction Code, if I remember correctly.

I also started programming in BASIC, and moved on to Pascal when I discovered Turbo Pascal around 1983, which also happened to be the language most of my CS classes used a year later when I switched majors from foundering in EE to excelling in CS.

I still have a bunch of my BASIC programs from the day.