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A magnet's magnetic moment (also called magnetic dipole moment and usually denoted μ) is a vector that characterizes the magnet's overall magnetic properties. For a bar magnet, the direction of the magnetic moment points from the magnet's south pole to its north pole, [ 15 ] and the magnitude relates to how strong and how far apart these poles ...
A 12-row/80-column IBM punched card from the mid-twentieth century. A punched card (also punch card [1] or punched-card [2]) is a piece of card stock that stores digital data using punched holes.
The first use of magnetic core was in the Whirlwind computer, [19] and Project Whirlwind's "most famous contribution was the random-access, magnetic core storage feature." [20] Commercialization followed quickly. Magnetic core was used in peripherals of the ENIAC in 1953, [21] the IBM 702 [22] delivered in
The shape of the magnet was originally created as a replacement for the bar magnet as it makes the magnetic field stronger for a magnet of comparable strength. [5] A horseshoe magnet is stronger because both poles of the magnet are closer to each other and in the same plane which allows the magnetic lines of flux to flow along a more direct path between the poles and concentrates the magnetic ...
Non-EMV cards work like magnetic stripe cards. This is common in the U.S. (PayPass Magstripe and Visa MSD). The cards do not hold or maintain the account balance. All payment passes without a PIN, usually in off-line mode. The security of such a transaction is no greater than with a magnetic stripe card transaction. [citation needed]
Forrest Corry Parry (July 4, 1921 – December 31, 2005) was an American IBM engineer who invented the magnetic stripe card used for credit cards and identification badges. [ 1 ] [ 2 ] Early life
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