Tag Archives: Color codes

Volcano warning schemes of the United States

In October 2006, the United States Geological Survey (USGS) adopted a nationwide alert system for characterizing the level of unrest and eruptive activity at volcanoes. The system is now used by the Alaska Volcano Observatory, the California Volcano Observatory (California and Nevada), the Cascades Volcano Observatory (Washington, Oregon and Idaho),…

Volcano warning schemes of the United States

Utility location

Utility location is the process of identifying and labeling public utility mains that are underground. These mains may include lines for telecommunication, electricity distribution, natural gas, cable television, fiber optics, traffic lights, street lights, storm drains, water mains, and wastewater pipes. In some locations, major oil and gas pipelines, national…

Utility location

United States color-coded war plans

During the 1920s and 1930s, the United States military Joint Army and Navy Board developed a number of color-coded war plans that outlined potential U.S. strategies for a variety of hypothetical war scenarios. The plans, developed by the Joint Planning Committee (which later became the Joint Chiefs of Staff), were…

United States color-coded war plans

PC System Design Guide

The PC System Design Guide (also known as the PC 97, PC 98, PC 99, or PC 2001 specification) is a series of hardware design requirements and recommendations for IBM PC compatible personal computers, compiled by Microsoft and Intel Corporation during 1997–2001. They were aimed at helping manufacturers provide hardware…

PC System Design Guide

Homeland Security Advisory System

In the United States, the Homeland Security Advisory System was a color-coded terrorism threat advisory scale. The different levels triggered specific actions by federal agencies and state and local governments, and they affected the level of security at some airports and other public facilities. It was often called the “terror…

Homeland Security Advisory System

HANDEL

HANDEL was the code-name for the UK’s National Attack Warning System in the Cold War. It consisted of a small console with two microphones, lights and gauges. The reason behind this was to provide a back-up if anything failed. If an enemy air strike was detected, a key on the…

HANDEL

Electronic color code

An electronic color code is used to indicate the values or ratings of electronic components, usually for resistors, but also for capacitors, inductors, diodes and others. A separate code, the 25-pair color code, is used to identify wires in some telecommunications cables. Different codes are used for wire leads on…

Electronic color code

BIOS color attributes

BIOS Color Attribute is a 8 bit value where the low 4 bits represent the character color and the high 4 bits represent the background color. For example, to print a white character ‘A’ with black background, the “BIOS Color Attribute” would be set to the hexadecimal value 0x0F. The…

BIOS color attributes

Audio and video interfaces and connectors

Audio connectors and video connectors are electrical connectors (or optical connectors) – plugs and sockets – for carrying audio signal and video signal. Audio interfaces and video interfaces define physical parameters and interpretation of signals. For digital audio and digital video, this can be thought of as defining the physical…

Audio and video interfaces and connectors

25-pair color code

The 25-pair color code, originally known as even-count color code, is a color code used to identify individual conductors in twisted-pair wiring for telecommunications. Color coding With the development of new generations of telecommunication cables with polyethylene-insulated wire by Bell Laboratories for the Bell System in the 1950, new methods…

25-pair color code

20-pair colour code Australia

The 20-pair colour code is a colour code used in Australia to identify individual conductors in a kind of electrical telecommunication wiring for indoor use, known as twisted pair cables. The colours are applied to the insulation that covers each conductor. The first colour is chosen from one group of…

20-pair colour code Australia

CPK coloring

In chemistry, the CPK coloring is a popular color convention for distinguishing atoms of different chemical elements in molecular models. The scheme is named after the CPK molecular models designed by chemists Robert Corey and Linus Pauling, and improved by Walter Koltun. History In 1952, Corey and Pauling published a…

CPK coloring

Color code

A color code or colour code is a system for displaying information by using different colors. The earliest examples of color codes in use are for long distance communication by use of flags, as in semaphore communication. The United Kingdom adopted a color code scheme for such communication wherein red…

Color code

HiSoUR – Hi So You Are

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