Question: What allows LED displays to function and create color?
About the article "The Night Watch", section "New LED illumination".

Candidate passages:
When the IBM System/34 was sold, a common monitor would be a monochrome 12-inch IBM 5251; in the System/36 heyday, a common monitor would be the 12-inch IBM 5291 or the color 14-inch IBM 3486.
Later in the S/36 life, third parties began to rise in popularity with such names as IIS, Decision Data, and Emerald.
Not only do the third-party monitors cost much less, they offer multiple session capability, programmable color palettes, larger display areas, and a direct PC printer port which allows S/36 users to access inexpensive inkjet printers without a separate adapter.
This is one reason why programming the S/36 has become more interesting over the years - the "blue" or "red" field one codes may not appear blue or red on all audience equipment.
All S/34 and S/36 display stations use 5250 protocol; S/34 allows either 960-character displays or 1920-character displays; S/36 allows either 1920-character displays or (rare) 3564-character displays.
Code two different display formats if it is possible that your audience might use the IBM 5252 Dual Display, which requires 960-character displays.
Consider whether your audience will be using color or monochrome displays - an application developed for color-only might not function well on a monochrome display. 
RubyCocoa allows you to pass Ruby codice_2 objects as function pointer arguments.
It will then use the libffi library to dynamically create a closure and pass it to the underlying function/method. 
 Utility.
"ColorSync Utility" is software that ships with Mac OS X.
It is used for management of color profiles and filters used in Apple's PDF workflow, or applying filters to PDF documents.
The interface is composed of two parts: the document browser and the utility window.
The document browser lets you zoom in and out of an image or apply a Filter to it.
The utility window has several options: Profile First Aid, Profiles, Devices, Filters and Calculator.
"Profile First Aid" allows you to repair ColorSync color profiles so they conform to the International Color Consortium specification.
"Profiles" allows you to browse the profiles installed on your system, grouped by location, class or space, and graphically compare any two profiles.
The profile map is displayed as a rotatable, scalable 3D object and can be plotted in CIELAB, CIELUV, Yxy, Yuv and CIEXYZ.
The "Devices" section allows you to see a list of all registered ColorSync devices such as your displays and printers, and see what ColorSync profile is applied to each one.
You can also override the default setting.
The "Filters" section allows you to build and modify PDF filters that are available to the rest of the operating system.
Each filter can be set to appear in one of three domains: Application, PDF Workflows, and Printing.
Filters set to Printing will appear in the drop-down menu under the "Save as PDF..." button in the standard Mac OS X print dialog box.
Filters set to PDF Workflow will appear in the Quartz Filters drop-down menu in the ColorSync section of a print dialog box.
The default filters that ship with Mac OS X are:  Black & White  Blue Tone  Create Generic PDFX-3 Document  Gray Tone  Lightness Decrease  Lightness Increase  Reduce File Size  Sepia Tone.
User-created filters can have color management, image effects, PDF retouch, domain selection and comments.
The "Color Management" section allows assigning a profile, choosing a default profile, rendering intent, converting to a profile or intermediate transform.
The "Intermediate Transform" section allows adjustment of brightness, tint, hue, saturation, bilevel (high pass filter) or profile assignment, to either grayscale, RGB or CMYK, or all data in the file.
This can be applied to either text, graphics, images or shading.
Complex filters can be created by stacking multiple effects.
Any changes made to the PDF file can then be saved as a new PDF file.
"Calculator" can convert between RGB, CMYK and other color value schemes, and features an interactive color-picker for identifying a color on the screen, duplicating a feature of another bundled utility, "DigitalColor Meter". 
There are several inquiries into using quantum dots as light-emitting diodes to make displays and other light sources, such as "QD-LED" displays, and "QD-WLED" (White LED).
In June 2006, QD Vision announced technical success in making a proof-of-concept quantum dot display and show a bright emission in the visible and near infra-red region of the spectrum.
Quantum dots are valued for displays, because they emit light in very specific gaussian distributions.
This can result in a display that more accurately renders the colors that the human eye can perceive.
Quantum dots also require very little power since they are not color filtered.
Additionally, since the discovery of "white-light emitting" QD, general solid-state lighting applications appear closer than ever.
A color liquid crystal display (LCD), for example, is usually backlit by fluorescent lamps (CCFLs) or conventional white LEDs that are color filtered to produce red, green, and blue pixels.
A better solution is using a conventional blue-emitting LED as light source and converting part of the emitted light into "pure" green and red light by the appropriate quantum dots placed in front of the blue LED.
This type of white light as backlight of an LCD panel allows for the best color gamut at lower cost than a RGB LED combination using three LEDs.
Quantum dot displays that intrinsically produce monochromatic light can be more efficient, since more of the light produced reaches the eye.QD-LEDs can be fabricated on a silicon substrate, which allows integration of light sources onto silicon-basedintegrated circuits or microelectromechanical systems.
A QD-LED integrated at a scanning microscopy tip was used to demonstrate fluorescence near-field scanning optical microscopy (NSOM) imaging. 
  AutoComplete  Provides autocomplete feature (suggestion lists and type-ahead functionality) for user interactions involving text-entry.
It supports a variety of data-source formats.
It also supports server-side data-sources via XMLHttpRequest.
Button  Enables the creation of rich, graphical buttons that function like traditional HTML form buttons.
Calendar  A graphical, dynamic control used for date selection.
Charts  The Charts Control retrieves data via the DataSource Utility and displays the data in a variety of common chart formats (line, bar, pie, etc.).
Color Picker  The Color Picker Control provides a rich visual interface for color selection.
Container  Supports a variety of DHTML windowing patterns including Tooltip, Panel, Dialog, SimpleDialog, Module and Overlay.
DataTable  Simple yet powerful API to display screen-reader accessible tabular data on a web page.
Notable features include sortable columns, pagination, scrolling, row selection, resizeable columns, and inline editing.
ImageCropper  ImageCropper provides the UI and interactive elements for a client-side image cropper.
Layout Manager  Allows you to create cross-browser, pixel perfect layouts with little effort by providing a fixed layout containing, top, bottom, left, right and center layout units.
Menu  Provides an easy API for creating fly-out menus, menu bars, and context menus.
Rich Text Editor  The YUI Rich Text Editor is a sophisticated client-side text-processor that is modular and highly configurable, suitable for any open-ended text-entry situation.
Slider  Provides a generic slider element that enables the user to choose within a finite range of values on one or two axes.
TabView  Provides navigable tabbed views of content; supports dynamic loading of tab content via XMLHttpRequest.
TreeView  Produces a content tree whose nodes can be expanded and contracted.
Uploader  Allows for multi-file file upload with feedback on upload progress.