If you compile a list of modern-day computer pioneers, Dennis Ritchie would be on any short list. About the time I was at school, fascinated in the early hours (midnight to 4AM) of playing 3 dimensional tic-tac-toe with my printer (no terminals or screens!) on a now ancient HP3000, Ritchie was working at Bell Labs devising a language – called “C”, that he would with 1-2 others use to devise a portable operating system called Unix.
Which, with its derivative Linux – today powers virtually every server on the Internet. And “C” is in many of the applications you use that access the Internet. From the driver that talks to your disk drive or SSD to the apps.