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The IBM 604 Electronic Calculating Punch was the world's first mass-produced electronic calculator along with its predecessor the IBM 603. [1] It was an electronic unit record machine that could perform multiple calculations, including division. It was invented and developed by Ralph Palmer, Jerrier Haddad and Byron Phelps.
A punched card is a flexible write-once medium that encodes data, most commonly 80 characters. Groups or "decks" of cards form programs and collections of data. The term is often used interchangeably with punch card, the difference being that an unused card is a "punch card," but once information had been encoded by punching holes in the card ...
A punched card (also punch card [1] or punched-card [2]) is a piece of card stock that stores digital data using punched holes. Punched cards were once common in data processing and the control of automated machines . Punched cards were widely used in the 20th century, where unit record machines, organized into data processing systems, used ...
Hollerith punched card. The tabulating machine was an electromechanical machine designed to assist in summarizing information stored on punched cards. Invented by Herman Hollerith, the machine was developed to help process data for the 1890 U.S. Census. Later models were widely used for business applications such as accounting and inventory ...
Hole punch clouds in Alabama in 2003 (NWS-Mobile) and Mississippi in 2007 (AccuWeather/JWesley). Residents of New York and Vermont reported seeing a strange cloud in the sky on Monday, June 3, 2024.
1948: The IBM 604 Electronic Punch. "No other calculator of comparable size or cost could match its capability".: 62 1949: The IBM 024 Card Punch, 026 Printing Card Punch, 082 Sorter, 403 Accounting machine, 407 Accounting machine, and Card Programmed Calculator (CPC) introduced. 1952: Bull Gamma 3 introduced.
Hole spacing was 0.1 inches (2.5 mm) in both directions. Data holes were 0.072 inches (1.8 mm) in diameter; sprocket feed holes were 0.046 inches (1.2 mm). Chadless tape Chadless 5-level Baudot paper tape c. 1975–1980 punched at Teletype Corp. Most tape-punching equipment used solid circular punches to create holes in the tape.
The Pixel 4a is an upcoming midrange smartphone developed by Google. Like the fan-favorite Pixel 3a before it, the Pixel 4a should deliver a clean, frequently updated version of Android 10 and ...
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