Apple has an “i” for revolutionary technology. Since its release, the company’s iPhone has spurred a revolution in cell phones and mobile computing. It also continues to innovate its core Mac desktop and laptop computers, all of which feature its OS X operating system, including the iMac all-in-one desktop and MacBook portable for the consumer and education markets, and the high-end Mac Pro and MacBook Pro for consumers and professionals involved in design and publishing. Apple scored a runaway hit with its digital music players (iPod) and online music store (iTunes). Its iPad tablet computer has become another game-changer in the consumer market. Apple gets nearly 40% of sales from customers in the US.