One of the original programmers of the ENIAC, the world's first electronic computer, Meltzer was selected for this role in 1945. A graduate of Temple University in 1942, she was hired by the Moore School of Engineering later that year to perform weather calculations, mainly because she knew how to operate an adding machine. In 1943, she was hired by the U.S. Army to perform calculations for ballistics trajectories.
Although mentioned in Women of the ENIAC, at the time little recognition was attributed to women working on the computer. Meltzer resigned from the team in 1947 to get married, before ENIAC was relocated to the Aberdeen Proving Grounds. In 1997, she was inducted into the Women in Technology International Hall of Fame, along with the other original ENIAC programmers.
