Computers are a critical part of our daily lives. In the last two decades, computers have revolutionized business, relationships, and shopping, and given rise to a whole new era of marketing and connection. By now, you probably know a computer is an incredible machine, but did you know just how amazing? Here’s a list of the top 20 computer facts you might not know:

1. The First Computer Weighed More Than 27 Tons

Her name was ENIAC, and she took up a modest 1800 square feet of space.

2. About 90% of the World’s Currency Only Exists on Computers

This means only about 10% of the global currency is actually cash.

3. The First Computer Mouse was Made of Wood

Doug Engelbart invented it in 1964.

4. About 70% of Virus Engineers Work for Organized Crime Syndicates

This gives new weight to the importance of anti-virus and anti-malware software, and excellent virus removal services.

5. The First Known Computer Programmer was a Woman

Her name was Ada Lovelace, and she lived in England, where she worked as a mathematician and writer. She is famous for working on the “Analytical Engine.”

6. Some of the Biggest Computer Brands Started in Garages

This is true for Apple, Microsoft, and HP.

7. People Blink Less When They Use Computers

While the average person blinks about 20 times a minute under normal circumstances, people on computers only blink about seven times a minute.