Frequently Asked Questions
Can parity detect all errors?
No. Parity reliably detects any odd number of bit flips and misses even numbers of flips. CRCs and Hamming codes detect more error patterns.
Where does parity fit in a UART frame?
Between the data bits and the stop bit(s). Common settings are 8N1 (no parity), 8E1 (even), 8O1 (odd). The transmitter and receiver must match.
Why is ECC memory better than parity?
ECC memory uses Hamming codes that both detect and correct single-bit errors and detect double-bit errors, instead of just flagging single-bit errors as parity does.
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