Title :
A backward glance. Arriving at the punched-card system
fDate :
2/1/2000 12:00:00 AM
Abstract :
Herman Hollerith´s punched-card machine for the US Census office consisted of: a bank of counters for tabulating results; a hand-operated reader that pushed wire contacts through the holes in the card into pools of mercury, completing an electrical circuit; and a sorting box with bins for holding the cards after they were read. An historical overview of this technology is presented by the author in this paper
Keywords :
history; punched card equipment; Herman Hollerith; historical overview; punched-card machine; punched-card systems; sorting box; technology; wire contacts; Automatic control; Brushes; Cities and towns; Contacts; Counting circuits; Educational institutions; Image storage; Sorting; Vacuum systems; Wire;
Journal_Title :
Spectrum, IEEE
