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Easy to stick The large magnetic holder measures 11.8 x 9.4 x 1 inches, the medium measures 8.4 x 7.0 x 1 inches and the smallest one measures 5.9 x 4.8 x 1 inches. ... notecards, and other things ...
Whiteboards became commercially available in the early 1960s, but did not become widely used until 30 years later. Early whiteboards needed to be wiped with a damp cloth and markers had a tendency to leave marks behind, even after the board was erased. [2] [3] In 1974, whiteboards were proposed as additional equipment for Soviet schools. [4]
On the front face of each drawer, there is usually a label holder to allow the user to identify the contents of the drawer. Many file cabinets incorporate a keyed lock to prevent unauthorized access to the documents being stored. There are two types of locks. A "cam lock" is activated with a key that rotates the lock.
Originally, 7- and 9-track data tapes only had human readable labels on them (i.e. as far as the operating system was concerned they were unlabeled). Somebody wishing to use a particular tape would ask the operator to mount that tape; the operator would look at the human readable label, mount it on a tape drive, and then tell the operating system which drive contained the tape of interest.
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In most magnetic stripe cards, the magnetic stripe is contained in a plastic-like film. The magnetic stripe is located 0.223 inches (5.7 mm) from the edge of the card, and is 0.375 inches (9.5 mm) wide. The magnetic stripe contains three tracks, each 0.110 inches (2.8 mm) wide.
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