সঠিক উত্তর হচ্ছে: ১৯৮১
ব্যাখ্যা: The IBM Personal Computer (model 5150, commonly known as the IBM PC) is the first microcomputer released in the IBM PC model line and the basis for the IBM PC compatible de-facto standard. Released on August 12, 1981, it was created by a team of engineers and designers directed by Don Estridge in Boca Raton, Florida. [Source: Wikipedia]