Grace Hopper was born on December 6, 1906 in New York and passed away in 1992. She earned her bachelor's degree at Vassar College, and she earned a master's degree and PhD in Mathematics at Yale. First, one of her main contributions to computer science was that she helped program a prototype which happened to be one of the first electromechanical computers in the world. They named that computer "Mark I". Secondly, she wrote a 500-page operation manual for the Automatic Sequence-Controlled Calculator explaining how the calculator operated and how computers--like the calculator--functioned. Third, she coined the term "bug" which is used to call a computer malfunction. Lastly, she was the first woman to get the title of "Distinguished Fellow of the British Computer Society". Posthumously, she was awarded the Presidential Medal of Freedom. An interesting fact about her was that she was a part of the Naval Reserve and retired as a Rear Admiral.