The name cryptocurrency is a combination of crypto graphy and currency . With cryptography, we use advanced math to secure our funds, making sure that nobody else can spend them.
Amazingly, nobody knows who invented Bitcoin. We only know them by their screen name - Satoshi Nakamoto. Satoshi could be a single person, a group of programmers, or if you believe some of the weirder theories, a time-traveling alien or secret government team.
Satoshi published a 9-page document in 2008, detailing how the Bitcoin system worked. Months later, in 2009, the software itself was released.