The U.S. Department of Commerce awarded Ida Rhodes a gold medal in 1949 for her functional design and application of electronic digital computing equipment. Born Hadassah Itzkowitz in 1900 in the Russian Empire, she arrived in the United States at age thirteen, eventually becoming a central figure in early American computer development and systems programming.
Academic Foundation
Rhodes began her formal mathematical education at Cornell University in 1919, where she held a tuition scholarship. During her undergraduate tenure, she worked as a nurse's aid at Ithaca City Hospital. By 1923, she earned both her BA and MA degrees. Her academic achievements were recognized by her election to Phi Beta Kappa in 1922 and Phi Kappa Phi in 1923. She continued postgraduate studies at Columbia University between 1931 and 1932.
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Following a stint at the New York State Department of Labor from 1938 to 1940, Rhodes joined the Mathematical Tables Project. Under the mentorship of Gertrude Blanch, she developed expertise in computational systems. She later transitioned to the National Institute of Standards and Technology, where she served from 1948 until her retirement in 1964. She remained a consultant for the Applied Mathematics Division there until 1971. During the early 1950s, she collaborated with Betty Holberton to create the C-10 programming language for the UNIVAC I computer.
Algorithmic Contributions and Legacy
Beyond hardware design, Rhodes contributed to software and machine translation. In 1977, she published work regarding the calculation of the Hebrew New Year and Passover dates, providing an algorithm still utilized in modern calendar software. Her professional accolades included a U.S. Department of Commerce Gold Medal in 1976 and a certificate marking the 25th anniversary of the UNIVAC I. She was also recognized as a UNIVAC I pioneer at a 1981 computer conference before her death in 1986 in Rockville.
Fast facts
- Born: 1900, Kamianets-Podilskyi
- Died: 1986, Rockville
- Education: Cornell University, Columbia University
- Major Employers: Mathematical Tables Project, NIST
- Programming Language: C-10
- Key Award: U.S. Department of Commerce Gold Medal (1976)
- Citizenship: United States; Russian Empire
Questions readers ask
What was Ida Rhodes's role in the development of UNIVAC I?
She designed the C-10 programming language for the system and was recognized as an official UNIVAC I pioneer.
Which mathematical algorithm is credited to Ida Rhodes?
She is responsible for the 'Jewish Holiday' algorithm, which is still used in modern calendar programs to calculate dates for the Hebrew New Year and Passover.
Achievements
- U.S. Department of Commerce Gold Medal — 1976
- Held posts at New York State Department of Labor, Mathematical Tables Project and National Institute of Standards and Technology
