Mnemonics are used to help memorize the electronic color codes for resistors. Mnemonics describing specific and relatable scenarios are more memorable than abstract phrases.
Mnemonics are used to help memorize the electronic color codes for resistors. Mnemonics describing specific and relatable scenarios are more memorable than abstract phrases.
| Color | Value |
|---|---|
| Black | 0 |
| Brown | 1 |
| Red | 2 |
| Orange | 3 |
| Yellow | 4 |
| Green | 5 |
| Blue | 6 |
| Violet | 7 |
| Grey | 8 |
| White | 9 |
| Gold | ±5% |
| Silver | ±10% |
| None | ±20% |
The first letter of the color code is matched by order of increasing magnitude. The electronic color codes, in order, are:
A mnemonic which includes color name(s) generally reduces the chances of confusing black and brown. Some mnemonics that are easy to remember:
A mnemonic that is taught in classrooms in Canada:
A mnemonic that is commonly taught in classrooms in India:
Mnemonics commonly taught in UK engineering courses include:
This mnemonic is commonly taught in the Netherlands:
Popular in the days of vacuum-tube radios:
The following historical mnemonics are generally considered offensive/outdated and should not be used in current electronics training:
Casual use in an engineering class has been cited as evidence of the sexism faced by women in scientific fields. [15] Latanya Arvette Sweeney, associate professor of computer science at Carnegie Mellon, mentions yet another as one reason why she felt alienated and eventually dropped out of MIT in the 1980s to form her own software company. [16] In 2011, a teacher in the UK was reprimanded by the General Teaching Council for alluding to an offensive mnemonic and partial use of another. [17]
A mnemonic device or memory device is any learning technique that aids information retention or retrieval in the human memory, often by associating the information with something that is easier to remember.
The major system is a mnemonic technique used to help in memorizing numbers.
An electronic color code or electronic colour 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 devices such as transformers or in building wiring.
Piphilology comprises the creation and use of mnemonic techniques to remember many digits of the mathematical constant π. The word is a play on the word "pi" itself and of the linguistic field of philology.
ROYGBIV is an acronym for the sequence of hues commonly described as making up a rainbow: red, orange, yellow, green, blue, indigo, and violet. When making an artificial rainbow, glass prism is used, but the colors of "ROY-G-BIV" are inverted to VIB-G-YOR". There are several mnemonics that can be used for remembering this color sequence, such as the name "Roy G. Biv" or sentences such as "Richard of York Gave Battle in Vain".
Christopher Niles Cox is an American dance music record producer, remixer, and DJ who has worked on over 600 records throughout his career. His album 12 Inches of Cox was released in 2002.
You're in Love, Charlie Brown is the fourth prime-time animated television special based upon the comic strip Peanuts, by Charles M. Schulz. It originally aired on CBS on June 12, 1967. This was the second non-holiday-oriented Peanuts special, following Charlie Brown's All Stars!.
The Shop Girl was an Edwardian musical comedy in two acts written by Henry J. W. Dam, with lyrics by Dam and Adrian Ross and music by Ivan Caryll, and additional numbers by Lionel Monckton and Ross. It premiered at the Gaiety Theatre in London in 1894 and ran for an extremely successful 546 performances. Its cast included Seymour Hicks, George Grossmith Jr., Arthur Williams, Edmund Payne, and Ellaline Terriss. It soon played in New York and was successfully revived in London in 1920.
A Latin mnemonic verse or mnemonic rhyme is a mnemonic device for teaching and remembering Latin grammar. Such mnemonics have been considered by teachers to be an effective technique for schoolchildren to learn the complex rules of Latin accidence and syntax. One of their earliest uses was in the Doctrinale by Alexander of Villedieu written in 1199 as an entire grammar of the language comprising 2,000 lines of doggerel verse. Various Latin mnemonic verses continued to be used in English schools until the 1950s and 1960s.
A planetary mnemonic refers to a phrase created to remember the planets and dwarf planets of the Solar System, with the order of words corresponding to increasing sidereal periods of the bodies. One simple visual mnemonic is to hold out both hands side-by-side with thumbs in the same direction. The fingers of hand with palm down represent the terrestrial planets where the left pinkie represents Mercury and its thumb represents the asteroid belt, including Ceres. The other hand represents the giant planets, with its thumb representing trans-Neptunian objects, including Pluto.
Violet Gave Willingly is a Canadian short documentary film, directed by Claire Sanford and released in 2022. A profile of her mother, textile artist Deborah Dumka, the film centres on their conversations about the sexism and misogyny that Dumka encountered when she went to university to study electrical engineering in the 1970s.