In Spanish, the letters “b” and “v” are pronounced more or less the same. That’s the only possible excuse I can see for the spelling in this Visual Basic tutorial.
Most of the time, the tutor Jalfaro spells Visual Basic correctly, but he decides to intersperse the tutorial with “Bisual Basic” and “Bisual Vasic” as well.
Is it just me, or is stating “Visual Basic es un lenguaje de progrmacion de VI Generacion” ([sic], translates to “Visual Basic is a sixth generation programming language”) a strange way to describe VB6? Maybe that’s a more usual diction in Spanish.