Just how rich is Apple? Well, it depends on what measure you are looking at. Last year, Apple’s revenue was $170.910 billion, with its total assets amounting to $207 billion. No wonder they have all the money to deal with those lawsuits, huh?

But where does all that money come from?

To save you all the trouble of doing your research and spending too much time in front of your computer (and inside the house), Ed Bott of ZDNet has done the hard work.

Here’s the result – a handy chart that breaks down Apple’s revenue sources.

I suppose the iPhone being the major source does not come as a surprise to anyone, does it? An interesting question is, years down the road, where will the iWatch be found in this chart?

While we’re at it, let’s look at these two other charts which tell us how Google and Microsoft make money.

Again, no surprise here. You are probably wondering about “Others”…this category is supposed to cover digital content and non-Motorola hardware products.

As for Microsoft, we see that they really make their living out of commercial licensing, but with all the changes the company is going through at the moment, we might see significant shifts in the future.