KwickClips Networks and the Internet · 42 sec · free
With even parity, is a byte with five 1s correct?
Short answer. No. Five is odd, so there is an error.
What can a parity block do that a single parity bit cannot?
It locates the exact bit that is wrong.
Parity
| Even parity: even count of 1s |
| Five 1s means an error |
| Block: bad row meets bad column |
Remember
| Block locates the bad bit |
Even parity. The byte has five ones. Is it correct? No, it is wrong. Even parity needs an even count of ones. Five is odd, so error. A parity block finds the exact bit. Remember. A parity block locates the bad bit.
This clip is from the full lesson: Error Detection: Parity, Checksum, Echo Check and ARQ — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: Cambridge IGCSE Grade 9 Computer Science (0478), Cambridge IGCSE Grade 10 Computer Science (0478), Cambridge IGCSE Grade 10 Computer Science (0478)
More KwickClips from this lesson
Disclaimer. KwickAcademy is free study material for general learning and revision. Parts of it, including the voice-over, are produced with the help of AI tools and may contain errors; if you spot one, please tell us and we will correct it. Syllabus, marks and exam details follow the latest official board publications available to us, and boards can change them at any time, so always confirm against your board's official website and your school. Using this material does not guarantee any marks or result. Board names and trademarks belong to their owners; Kwickprep is not affiliated with or endorsed by any examination board. We never ask for passwords, OTPs or ID numbers. Your progress is saved only in this browser. Full disclaimer · Privacy