The ARM, the PPC, the x86, and the iPad…

Hot on the heels of the iPad release comes news that Apple has just (very likely) purchased another processor design firm (via EDN).  Intrinsity, the chip design company in question, is a designer of RISC-based CPUs and is rumored to have had something to do with the design of Apple’s new A4 processor. The A4 is Apple’s key ingredient for a smooth user experience in the much-hyped iPad.

Those keeping track of Apple’s purchases will remember that, almost exactly 2 years ago to the day, Apple bought California-based CPU designer PA Semiconductors. However, PA Semi specializes in PowerPC-based designs – a platform that Apple abandoned almost 5 years ago now. But Apple’s most recent acquisition is directly applicable to its current needs in the hardware market, and in particular, its forays into the ARM market. In the official iPad video, Apple engineers and executives discuss their need for a custom CPU in order to let them dictate where the ooomph and power will go, and to what purposes the transistors will be biased.

With all these buyouts and different chipsets in question, it’s easy to get confused. So what is the difference between the ARM, the PPC, and the x86, and where does it matter?

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Why Apple Delayed Leopard for the iPhone

Yesterday’s news: Apple [[AAPL]] takes developers off of OS X 10.5 “Leopard” to hurry up and meet iPhone deadlines.

Today’s news: Why they did it.

This decision was not about (not) missing deadlines for contracts with Cingular, not allocating enough resources to iPhone in the first place, or otherwise neglecting to do the right stuff at the managerial level – iPhone was delayed, yet Apple chose to trade in an iPhone delay for a 4-month postponement of OS X Leopard. Why would they do that? Is iPhone really a bigger deal than OS X 10.5? Does Apple care more about the iPhone than Leopard?

Apple is notoriously quiet about the future of their products – especially their operating system, OS X. While Leopard is but a bump to the minor version of Mac OS 10, it’s supposed to be a big deal. It’s certainly hyped-up for a lot longer than the actual iPhone – both in and out of Apple. So why this “sudden” shift in priorities? The answer is rather clear, and even self-explanatory.

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