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The following historical mnemonics are generally considered offensive/outdated and should not be used in current electronics training: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.
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