San Francisco ? It’s easy to forget now, but Apple’s magnetism was once confined to a cult-like following of geeks seduced by the elegance and simplicity of the company’s computers.

Over the past decade, though, Apple has emerged as a trendsetter and a wealth-making machine — the rare company that appeals to the cool cats hanging out in hip cafes and the fat cats looking to make another killing on Wall Street.

In the process, Apple has left an indelible mark that extends far beyond that first personal computer Steve Jobs and Steve Wozniak introduced 35 years ago. Since then, Apple has transformed the music, retailing, marketing and cellphone industries. Now, it’s engineering yet another evolution in computing with the increasingly popular iPad tablet.

Those achievements have endeared Apple to the masses, turning its product announcements into the technology industry’s latter-day version of a Beatles concert and turning its familiar logo into an emblem of exquisite taste.

Part visionary, showman and uncompromising taskmaster, Jobs assembled a team that had an incredible knack for anticipating consumer trends and popularizing them by designing devices that were easy — and delightful — to use. Apple didn’t invent music players, smartphones or tablet computers, but under Jobs’ leadership, the company convinced the masses that the iPod, the iPhone and the iPad were breakthroughs that they couldn’t live without.

It seemed as if the second coming of Walt Disney and the rest of the “imagineers” who built Disneyland during the mid-1950s had come to Silicon Valley to lead the way into the 21st century.

In the past decade, Apple’s gadgets have transformed society, enabling people to bring along their favorite music, books, videos and websites almost everywhere they go. In the process they inspired countless imitators and ensured that Jobs, who resigned Wednesday, will be remembered as one of the most successful CEOs in American history.

None of it would have happened if Jobs hadn’t returned to Apple in 1997 after being pushed out of the company in the mid-1980s by John Sculley, a CEO that Jobs had lured away from Pepsico Inc. by asking, “Do you want to spend the rest of your life selling sugared water or do you want a chance to change the world?”

Jobs never left any doubt he intended to be a game changer from the time he and Wozniak, a high school buddy, planted Apple in a Silicon Valley garage. With the introduction of the Apple II — the first personal computer to display color graphics –Jobs provided a glimpse of how he would go on to put the “i” into personal technology and change people’s lives.

The innovations kept coming as long as Jobs was at Apple (there was a 12-year exile after the falling out with Sculley).

The Mac computer brought a graphical interface that could be clicked with a mouse. The iPod enabled anyone to carry around a library of music in their pocket. The iPhone changed the concept of mobile computing and popularized the catchphrase “there’s an app for that.” Most recently, the iPad is making the PC look antiquated as it creates more convenient ways to read, watch movies, play games and fetch information from the Internet.

Jobs’ wizardry rescued a company on the precipice of bankruptcy and elevated it into the second most valuable business in America. It now has a market value of nearly $350 billion, behind only Exxon Mobil Corp. — a company whose fortunes are tied to wildly fluctuating oil prices rather than the beauty of a good idea.

Anyone who had the foresight to dip into their retirement accounts to buy $100,000 worth of Apple stock on the day Jobs became the company’s CEO in September 1997 would be set for life: That investment would be worth more than $6.8 million now. When he took the job, Jobs foreshadowed the marketing hook for a new product line by calling himself “iCEO” to reflect his initial role as Apple’s interim leader.

The last test of Jobs’ genius may come as he tries to pass on his magical touch to his successor. He believes he has found the right guy in Tim Cook, with whom he has worked closely since 1998. The collaboration doesn’t necessarily have to stop because Jobs will still hold an influential role as Apple’s chairman.

By all accounts, Cook is a top-notch executive who has proven that he knows how to pull the levers of Apple’s mystique. He has run the company during Jobs’ three leaves of absence since 2004. He was the one responsible for tuning Apple’s manufacturing process to solve chronic product delays and supply problems prevalent when he joined the company in 1998.

Still, it’s hard not to shake the feeling that this may be the beginning of the end of an era — both for technological zealots trying to figure out when the iPhone 5 is coming out and nervous investors wondering whether to buy or sell the company’s stock.

“Oh my goodness, I was terribly shocked!” said Chris Perez, 32, as he stood outside an Apple store in north Phoenix on Wednesday night. “He was the man that came up with everything ‘i.'”