Pi History  D. F. Ferguson, the Destop Calculator, & Pi 
The Illustrated History of Pi 



D.F. Ferguson, the Desktop Calculator, and Pi 




The desktop calculator, although a relatively primitive instrument by today's standards, was a technology tourdeforce in its day. 



In 1947, D. F. Ferguson, working with a destop calcuator, was able to calculate 808 digits of pi. 



This was subsequently extended by others using new technology ... the electronic digial computer ... 
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History of Pi  D F Ferguson, The Desktop Calculator, and Pi  Illustrated History of Pi www.NationalPiDay.org National Pi Day 











