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Two-shot injection molded keycaps Swappable keycaps of a French Model M keyboard A keycap is a small cover of plastic, metal, or other material placed over the keyswitch of a computer keyboard . Keycaps are often illustrated to indicate the key function or alphanumeric character they correspond to.
Keycap in a French Model M. The Model M keyboard was designed to be less expensive to produce than the Model F keyboard it replaced. Principal design work was done at IBM in 1983–1984, drawing on a wide range of user feedback, ergonomic studies, and examination of competing products.
The Apple Extended Keyboard (AEK, model M0115) is a computer keyboard that was first sold separately alongside the Macintosh II and SE starting in 1987. It was replaced in 1990 by the Apple Extended Keyboard II ( AEKII , model M3501) which was pre-packaged with Apple Professional Desktops starting with the Macintosh IIsi .
A well-known class of IBM PC keyboards is the Model M. Introduced in 1984 and manufactured by IBM, Lexmark, Maxi-Switch and Unicomp, the vast majority of Model M keyboards feature a buckling spring key design and many have fully swappable keycaps.
The Symbolics-labeled version shown here was only used with the LM-2, which was Symbolics' repackaged version of the MIT CADR.Later Symbolics systems used a greatly simplified keyboard, the Symbolics keyboard, that retained only the basic layout and the more commonly used function and modifier keys from the space-cadet keyboard.
The Model F was a series of computer keyboards produced mainly from 1981–1985 and in reduced volume until 1994 by IBM and later Lexmark. [1] Its mechanical-key design consisted of a buckling spring over a capacitive PCB, similar to the later Model M keyboard that used a membrane in place of the PCB.
An iceberg in the Arctic Ocean. An iceberg is a piece of fresh water ice more than 15 meters (16 yards) long [1] that has broken off a glacier or an ice shelf and is floating freely in open water. [2] [3] Smaller chunks of floating glacially derived ice are called "growlers" or "bergy bits".
Hemingway's iceberg theory highlights the symbolic implications of art. He makes use of physical action to provide an interpretation of the nature of man's existence. It can be convincingly proved that, "while representing human life through fictional forms, he has consistently set man against the background of his world and universe to examine ...