On December 21, 1920 was born Adele Goldstine. She was an American mathematician and computer programmer. She wrote the manual for the first electronic digital computer, ENIAC. Through her work programming the computer, she was also an instrumental player in converting the ENIAC from a computer that needed to be reprogrammed each time it was used to one that was able to perform a set of fifty stored instructions.
On December 23, 1938 was born Robert Elliot Kahn. He is an American electrical engineer, who, along with Vint Cerf, first proposed the Transmission Control Protocol (TCP) and the Internet Protocol (IP), the fundamental communication protocols at the heart of the Internet. In 2004, Kahn won the Turing Award with Vint Cerf for their work on TCP/IP.
On December 28, 1969 was born Linus Benedict Torvalds. He is a Finnish-American software engineer who is the creator and, historically, the principal developer of the Linux kernel, which is the kernel for Linux operating systems and other operating systems such as Android and Chrome OS. He also created the distributed version control system Git.