It looks like the thing that's going to really blow up soon is IoT (or, at the very least, it looks like it's going to be the most lucrative, un-sexy-sounding thing on the planet in 5-10 years). If you have a good grounding in C, familiarize yourself with contiki (which, although it's not being used now, is likely to become the backbone of any third-party IoT node that isn't running linux) and some basic digital electronics.
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It looks like the thing that's going to really blow up soon is IoT (or, at the very least, it looks like it's going to be the most lucrative, un-sexy-sounding thing on the planet in 5-10 years). If you have a good grounding in C, familiarize yourself with contiki (which, although it's not being used now, is likely to become the backbone of any third-party IoT node that isn't running linux) and some basic digital electronics.