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The amendment 1 of ISO/IEC 9995-2:2009, which was published in 2012, specifies two ways of the emulation of a numeric keypad within the alphanumeric section of a keyboard. One way, with mappings to keys in the left half of the alphanumeric section (shown green in the diagram above), emulates a numeric keypad with the digits 1,2,3 in the upper row.
The appropriate lubricant for an automatic lubrication system can be determined using a Lincoln ventmeter. Factors such as the lubricant consistency, the diameter and length of the feed line and the operating temperature are taken into account. [7] The lubricant, be it oil or grease, is dispensed from a reservoir.
The keyboard sends the key code to the keyboard driver running in the main computer; if the main computer is operating, it commands the light to turn on. All the other indicator lights work in a similar way. The keyboard driver also tracks the shift, alt and control state of the keyboard.
Membrane keyboard as used on the East German Robotron Z1013.. A membrane keyboard is a computer keyboard whose keys are not separate, moving parts, as with the majority of other keyboards, but rather are pressure pads that have only outlines and symbols printed on a flat, flexible surface.
There are different versions of the Enhanced keyboard layout: 101 standard US layout double-width Return key (spanning C12 and C13) with a 1.5-width key at D13; double-width Backspace key (spanning E13 and E14) Introduced April 1986. [1] 102: European layouts different shaped Return key (spanning 1.5-width D13 and C13) with the U.S. D13 at C12 ...
In 1984, Ted Selker, a researcher at PARC, worked on a pointing stick based on a study [citation needed] showing that it takes a typist 0.75 seconds to shift from the keyboard to the mouse, and comparable time to shift back. Selker built a model of a device that would minimize this time.
Keyboard of a German manual typewriter (early 20th century), with Shift keys labelled "Umschalter" ("switch") Keyboard symbol for "Level 2 Select" (i.e. "Shift") The keyboard symbol for the Shift key (which is called Level 2 Select key in the international standard series ISO/IEC 9995) is given in ISO/IEC 9995-7 as symbol 1, and in ISO 7000 “Graphical symbols for use on equipment” as a ...
Key rollover is the ability of a computer keyboard to correctly handle several simultaneous keystrokes. A keyboard with n-key rollover (NKRO) can correctly detect input from each key on the keyboard at the same time, regardless of how many other keys are also being pressed. Keyboards that lack full rollover will register an incorrect keystroke ...