Editing Calculator (section)

==References==
{{Reflist|25em}}

===Sources===
* {{cite journal| title=Blaise Pascal (1623–1662) Tercentenary of the calculating machine| first=S.| last=Chapman| journal=Nature| volume=150| issue=3809| date=October 31, 1942| pages= 508–509| location=London| doi=10.1038/150508a0| bibcode=1942Natur.150..508C| doi-access=free}}
* {{Cite journal |volume=103 |issue=8 |pages=633–639 |last=Hamrick |first=Kathy B. |title=The History of the Hand-Held Electronic Calculator |journal=The American Mathematical Monthly |date=October 1996 |doi=10.2307/2974875 |jstor=2974875}}
* {{cite book|title=Empire of the Sum: The Rise and Reign of the Pocket Calculator |last=Houston|first=Keith|publisher=Norton |year=2023 |isbn=978-0-393-88214-8|url=https://wwnorton.com/books/9780393882148}}
* {{cite book|title=The Universal History of Computing |last=Ifrah|first=Georges|publisher=John Wiley & Sons, Inc. |year=2001 |isbn=978-0-471-39671-0|url-access=registration |url=https://archive.org/details/unset0000unse_w3q2}}
* {{cite book|language=fr|title=Histoire des instruments et machines à calculer, trois siècles de mécanique pensante 1642–1942 |first=Jean |last=Marguin |year=1994 |publisher=Hermann |isbn=978-2-7056-6166-3}}
* {{cite book |last=Williams |first=Michael R. |title=History of Computing Technology |publisher=IEEE Computer Society |location=Los Alamitos, California |year=1997 |isbn=978-0-8186-7739-7}}