The World's Oldest Computer

NASA didn't spend millions developing a space pen. Paul C. Fisher invented the pressurized space pen with his own money, and NASA later adopted it for its reliability.

David Bradley, an IBM engineer, created the famous "Ctrl+Alt+Delete" shortcut to reboot the IBM PC. It was intended to be a secret key combination to prevent accidental reboots.

The iconic sound of dial-up internet connecting is called "Modem Handshake." It's the result of two modems negotiating to establish a stable connection.

The "@" symbol was first used in accounting to represent "at the rate of." It gained fame in email addresses and social media handles much later.


Ada Lovelace, an English mathematician and writer, is considered the world's first computer programmer. She wrote the first algorithm designed for Charles Babbage's Analytical Engine.

In 2018, IBM unveiled a computer smaller than a grain of salt. It's designed for blockchain technology and is used to track and authenticate goods.

The first photo ever uploaded to the World Wide Web was of a parody band called "Les Horribles Cernettes" in 1992, taken at CERN.

Smartphones contain rare and valuable minerals like gold, silver, and palladium. Recycling old phones can help recover these precious resources.