Madison Allworth

The tech giant kicked off celebrations with a performance by Grammy winner Alicia Keys at Grand Central Station.

Apple then taking the festivities worldwide with special events in China, Thailand, South Korea.

The party makes its way back to Apple Park in Cupertino, California for the company's official anniversary April 1st.

But it

All began back in 1976.

Steve Jobs was the marketing genius.

Steve Wozniak was the engineering brain, inventing the company's first computers, Apple I and Apple II.

But lately, Wozniak has been raising concerns about artificial intelligence, warning it may not yet deliver the reliability and human understanding that people expect.

Wozniak suggests growing dependence on automated systems could change how people process information fast.