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Rear Admiral Grace Murray Hopper Was the third person to prorgram the first computer, authored the first compiler, created the first business-oriented programming language which led to the development of COBOL, received the first ever Computer Science Man of the Year Award, discovered the first computer "bug" and was the oldest commissioned officer in the US Navy at the time of her retirement.
Alan Mathison Turing, OBE, FRS 23 June 1912 – 7 June 1954), was an English mathematician, logician, cryptanalyst, and computer scientist. He was highly influential in the development of computer science, providing a formalisation of the concepts of "algorithm" and "computation" with the Turing machine, which played a significant role in the creation of the modern computer.
J C Leyendecker United States Navy ca 1920 by RosiesVintageArt, $9.95
From the invention of computer programming languages up to the mid-1980s, many if not most computer programmers created, edited and stored their programs line by line on punched cards. The practice was nearly universal with IBM computers in the era.
United States Navy Department Bureau of Ordnance: It's Today's Production that Counts!
If you are reading this, thank this woman. Her name is Grace Hopper, and she is one of the most under appreciated computer scientists ever. You think Gates and Jobs were cool? THIS WOMEN WORKED ON COMPUTERS WHEN THEY TOOK UP ROOMS. She invented the first compiler, which is a program that translates a computer language like Java or C++ into machine code, called assembly, that can be read by a processor. Every single program you use, every OS and server, was made possible by her first compiler.
Augusta Ada King, Countess of Lovelace (1815 - 1852) the first computer programmer. "The Analytical Engine has no pretentions whatever to originate anything. It can do whatever we know how to order it to perform (probably the first known instance of "Computers can only do what they are programmed to do").