It's largely a matter of semantics and technical nit-picking, but everyone has their own ideas about what's
a microprocessor chip and what's a microcontroller chip. to make things more complicated, it seems every
market-research firm uses its own definition, so you can't even compare projections from two different firms.
I tend to count them together, but if you're a stickler, here's the most common definition: microcontrollers
have on-chip RAM or ROM, which allows them to run standalone (without extra memory chips).
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