From the early 20th century into the 1970s, Americans used punched cards to enter data onto tabulating equipment and then electronic computers. This early key-operated punch is based on patents of the ...
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This machine was used to punch paper ...
Credit: Maria Dryfhout/Shutterstock.com. This month, the U.S. Census Bureau undertakes the 24th national census, beginning with Census Day on April 1. Today's tools for data collection include the ...
The U.S. Constitution requires that a population count be conducted at the beginning of every decade. This census has always been charged with political significance, and continues to be. That’s clear ...
The US Constitution requires that a population count be conducted at the beginning of every decade. This census has always been charged with political significance, and continues to be. That’s clear ...
As a schoolboy growing up in New York City in the 1870s, Herman Hollerith often managed to sneak out of the schoolroom just before spelling lessons. His teacher noticed and one day locked the door; ...
The US Constitution requires that a population count be conducted at the beginning of every decade. This census has always been charged with political significance, and continues to be. That’s clear ...
The U.S. Constitution requires that a population count be conducted at the beginning of every decade. This census has always been charged with political significance, and continues to be. That’s clear ...
The recent Supercon 6 badge, if you haven’t seen it, was an old-fashioned type computer with a blinky light front panel. It was reminiscent of an Altair 8800, a PDP-11, or DG Nova. However, even back ...
The U.S. Constitution requires that a population count be conducted at the beginning of every decade. This census has always been charged with political significance, and continues to be. That’s clear ...
An updated version of this article was published on December 1, 2021. Read it here. The U.S. Constitution requires that a population count be conducted at the beginning of every decade. This census ...
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