Top 10 Greatest Programmers in the World of all Time Dennis Ritchie Dennis MacAlistair Ritchie was an American computer scientist who “helped shape the digital era”. He created the C programming language and with long-time colleague Ken Thompson, the Unix operating system. Ritchie and Thompson received the Turing Award from the ACM in 1983, the Hamming Medal from the IEEE in 1990 and the National Medal of Technology from President Clinton...