Computer
Smith Collection / Gado / Getty Images
When we think of computers today the thought of laptops, desktops, tablets, and smartphones come to mind. The first use of the term “computer” actually referred to women who gathered in rooms and crunched numbers by hand. These women used their smarts to complete various tasks, never relying on calculators or other forms of completion. The computer job was eventually replaced by electronic devices which were given the same name as the job they replaced — that had to sting a little bit. The women on the left in this photo, taken in 1955, is NASA/NACA human computer, Amy Ruhlin.