Steve Wozniak designed the Apple I and later helped create the Apple II as an Apple co-founder.
Wozniak was the engineering specialist in Apple’s original partnership, while Steve Jobs focused heavily on product presentation, business strategy, and marketing. The Apple I, introduced in 1976, was a single-board computer that users generally had to connect to their own keyboard and display. Wozniak’s design helped make personal computing more accessible to hobbyists.
The Apple II followed in 1977 and became one of the company’s first major commercial successes. Its integrated keyboard, color graphics, and expandability made it more practical for homes, schools, and businesses. The Apple II family remained important to Apple’s growth during the late 1970s and 1980s.
A common mix-up is crediting Jobs alone for Apple’s earliest machines. Jobs was central to turning the technology into a product, but Wozniak was the principal engineer behind the original computer designs. Apple’s enormous market value ultimately grew from many later product generations, including the Macintosh, iPod, iPhone, and services business.