How much data does the human brain hold?

Since someone already answered the computer part, I will contribute: your brain has ~ 100 billion nerve cells. Each one of those is wired up to ~ 10,000 other cells. That totals about 1 quadrillion connections. Your brain processes ~ 8.6 quadrillion messages each day! That number is: 1,000,000,000,000,000.

Each day, the global population sends/rec. ~ 50 billion cell phone calls, 17 billion texts, and 300 billion emails. ALL of this adds up to less than 1/200th of 1 percent of what your brain carries out---every day!

**For those who don't know, the ~ sign means, 'approximately'.**

We have different parts in our brain, all meant for certain task like seeing, talking, walking, breathing, etc. There is no limit to how much we can hold, if we did we would probably never run out because we only have 10% of our brain long term memory the rest is short term like when you got sick or when you baked that cake those things don't stick in your memory for long.

approximately 2.5 Petabytes sorry i had the wrong info

As much as we can learn

We may never know... Well we probably will, just not right now.

Its probably infinite...