I did, of course in the early stages literally dabble at the lowest level with binary :)
Because I needed a very low-level understanding, I practiced, messed around, and wrote a Bit::Manip module to help me understand the mechanics of binary/bit manipulation to better my knowledge of how the heck to read datasheets, and hack hardware. At the time (there was a discussion here about it), I published it as it was a no-brainer publish to the CPAN.
The C/C++ stuff came as a side effect really, when I began writing distributions for specific ICs and hardware.
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