odd-even check
C2 (Very low frequency; highly specialized technical term)Formal, Technical (Computing, Telecommunications, Digital Electronics)
Definition
Meaning
A form of parity check, typically in computing or data transmission, where an extra bit is added to a binary sequence to make the total number of 1-bits either always odd (odd parity) or always even (even parity), used to detect single-bit errors.
It can refer more generally to any method of verifying data integrity by assessing whether the count of a specific element is odd or even. Historically, it was also a term in some older inventory or counting systems.
Linguistics
Semantic Notes
It is a compound noun functioning as a single unit. 'Check' here means 'verification', not a financial instrument or a pattern.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling remains the same.
Connotations
None beyond the technical domain.
Frequency
Equally rare in both dialects, confined to technical fields.
Vocabulary
Collocations
Grammar
Valency Patterns
The system [uses/performs] an odd-even check.An odd-even check [is performed/implemented] on the data.To [detect/ensure] integrity, apply an odd-even check.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Virtually never used, unless in highly technical IT business contexts discussing data integrity protocols.
Academic
Used in computer science, telecommunications, or digital electronics textbooks and papers.
Everyday
Not used in everyday conversation.
Technical
Primary context. Refers to a fundamental error-detection technique in data storage and transmission.
Examples
By Part of Speech
verb
British English
- The protocol requires you to odd-even check each data frame before transmission.
- We need to odd-even check these memory blocks.
American English
- The system will odd-even check the packet automatically.
- Make sure to odd-even check the serial output.
adverb
British English
- The data was verified odd-even checkly. (Note: Highly non-standard/awkward; adverb form is virtually nonexistent.)
American English
- The processor operates, performing checks odd-even checkly. (Note: Highly non-standard/awkward; adverb form is virtually nonexistent.)
adjective
British English
- The odd-even check bit was incorrectly set.
- They developed an odd-even check algorithm.
American English
- An odd-even check scheme is often sufficient for simple error detection.
- The odd-even check function is enabled by default.
Examples
By CEFR Level
- The simple computer game uses an odd-even check to see if your score is correct.
- A basic form of error detection in digital systems is the odd-even check, which adds a parity bit to the data.
- If the odd-even check fails, the receiver requests the data packet to be sent again.
- While rudimentary, the odd-even check can detect all single-bit errors, though it is powerless against even-numbered bit errors.
- The designer opted for an odd-even check over a CRC for its minimal computational overhead in the embedded system.
Learning
Memory Aids
Mnemonic
Think of lining up soldiers (bits) in pairs. An 'odd-even check' is the sergeant counting them to see if they make neat pairs (even) or if one is left alone (odd), revealing a mistake.
Conceptual Metaphor
DATA INTEGRITY IS BALANCE (An odd or even count is a state of balance/agreement that can be verified).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not translate 'check' as 'чек' (a financial document). Use 'проверка', 'контроль'.
- Avoid interpreting 'odd-even' as 'нечётный-чётный' in a general alternating sense (like odd-even traffic rules). Here it is a specific technical compound.
Common Mistakes
- Using 'odd-even check' to refer to alternating patterns (e.g., odd-even license plate restrictions).
- Confusing it with more complex error-correction codes.
- Misspelling as 'oddeven check' or 'odd/even check'.
Practice
Quiz
What is the primary purpose of an odd-even check?
FAQ
Frequently Asked Questions
No, they are different. An odd-even check (parity check) uses a single bit to make a count odd or even. A checksum is a more complex value calculated from the data, offering better error detection for multiple or burst errors.
No, it can only detect errors, specifically an odd number of bit flips in a unit of data. It cannot identify which bit is wrong or correct it.
In older computer memory (RAM with parity bits), in some simple serial communication protocols, and as a fundamental concept taught in computer science and electronics courses.
In odd parity, the parity bit is set so the total number of 1s (including the parity bit) is odd. In even parity, the total is made even. Both are forms of an odd-even check.