Steve Wozniak

Yes, Wozniak designed the hardware circuit board and the operating system for the Apple I almost entirely by himself before Apple Computer was officially incorporated. He famously hand-built the original printed circuit boards and initially gave them away to his Homebrew Computer Club peers without a case.

In February 1981, Wozniak crashed his small private airplane upon takeoff from the Santa Cruz Sky Park, resulting in temporary amnesia. He took a leave of absence from Apple following the crash and eventually returned to finish his undergraduate degree at UC Berkeley under the alias Rocky Clark.

The "i" originally stood for "internet" when the iMac was introduced in 1998, though Wozniak was largely absent from Apple's daily operations by this time. He had stepped away from active engineering roles years earlier, though he remains an official employee and shareholder.

Yes, after leaving his full-time role at Apple, Wozniak started a company called CL 9 to develop programmable remote controls. In 1987, the company released the CORE remote, which was a revolutionary device capable of learning infrared signals from other remotes.