Dennis Ritchie died today at the age of 70. Who was he and why you should care? Well there are 2 main reasons that make him a very important person in the history of computer science.

• Unix
• C

He is the one that co-created Unix and he is also the one who created the C programming language. Unix Operating System and C Programming language are among the most important inventions in the history computer software. Without these inventions, we might not be able to see the computer and mobile devices the way they are nowadays. C language and Unix are the 2 things on which the modern software world is built upon.