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Embedded Systems Architecture by Daniele Lacamera

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RAM

"640 KB of memory ought to be enough for everyone"
– Bill Gates (founder and former director of Microsoft)

This famous statement has been cited many times in the past three decades to underline the progress in technology and the outstanding achievements of the PC industry. While it may sound like a joke for many software engineers out there, it is still in these figures that embedded programming has to be thought about, more than 30 years after MS-DOS was initially released.

Although most embedded systems are capable of breaking that limit today, especially due to the availability of external DRAM interfaces, the simplest devices that can be programmed in C may have as little as 4 KB of RAM available to implement the entire system logic. ...

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