Earlier Sorters
Original census sorter, 1890, manual.
Sorting cards became an issue during the 1900 agricultural census, so Herman Hollerith developed the 1901 Hollerith Automatic Horizontal Sorter, a sorter with horizonal pockets.
In 1908, he designed the more compact Hollerith 070 Vertical Sorting Machine that sorted 250 cards per minute.
The IBM Type 71 Vertical Sorter came out in 1928. It had 12 pockets that could hold 80 cards. It could sort 150 cards per minute.
The IBM Type 75, Model 1, 19??, 400 cards per minute
The IBM Type 75, Model 2, 19??, 250 cards per minute
Read more about this topic: IBM Card Sorter
Famous quotes containing the word earlier:
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—Arlie Hochschild (20th century)