As part of the Apple earnings folderol earlier this week, the company today filed a Form 10-K with the US Securities and Exchange Commission. There's some good news in there for those who want the company to continue to innovate with new and improved products: Apple spent 32 percent more on research and development in 2013 -- US$4.5 billion -- than it did in 2012.
The company revealed that R&D expenses, when compared to net sales, actually remained fairly constant. Since net sales have ballooned, so have R&D costs. Much of the growth in R&D expenses was attributed to additional personnel.
Apple's filing states that, "The Company continues to believe that focused investments in R&
