You very likely wouldn't know it's even a computer. Countless billions of hours a futures mankinds time has been poured into it shrinking each component to the atomic scale. Generation after generation of hardening against future hackers attacks, and even self aware viruses have increased the machines complexity beyond human understanding. The code the computer interprets would be a lost language from a civilization that doesn't exist yet.

And that is pretty much where we are in understanding the interworkings of DNA today. Nature has a 3 billion year jump on us, and it's going to take us a long time to unravel it all.