Busicom was one of the first companies to widely use integrated circuits in calculators. This allowed a dramatic decrease in the size of electronic calculators, and eventually led to the replacement of the slide rule.  This came about due to the popularity of electronic desktop calculators.

Next : 1971- The world's first microprocessor was created
 
 
 
 
 
 
 

All material and images on these pages are copyright Joseph and Ed. This page was developed for the Thinkquest1999 competition.