Abstract
"Processors are overdesigned for most applications," says Rakesh Kumar, an associate professor of electrical and computer engineering at the University of Illinois. It's a well-known and necessary truth: In order to have programmability and flexibility, there's simply going to be more stuff on a processor than any one application will use. That's especially true of the type of ultralow-power microcontrollers that drive the newest embedded computing platforms such as wearables and Internet of Things sensors. These are often running one fairly simple application and nothing else (not even an operating system), meaning that a large fraction of the circuits on a chip never, ever see a single bit of data.
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