Data is binary when you writing software. There’s absolutely nothing binary about data when you’re in the messy world of electronics, where fundamentally everything is analog.
Reading data from multi-level flash chips, or from spinning rust, has more in common with an FM radio, or mobile phone radio, than it does with anything you’ll see in an IDE. It’s all very complex signal processing, trying to extract small signals from lots of noise, in that world you know what your data probably looks like. You then need checksumming to figure out if it’s correct, and if it isn’t you need to try again, or declare the data lost.
Reading data from multi-level flash chips, or from spinning rust, has more in common with an FM radio, or mobile phone radio, than it does with anything you’ll see in an IDE. It’s all very complex signal processing, trying to extract small signals from lots of noise, in that world you know what your data probably looks like. You then need checksumming to figure out if it’s correct, and if it isn’t you need to try again, or declare the data lost.