Memory correcting method

A memory correcting method comprising steps:

• providing a memory with a plurality of memory bytes each having M bits, wherein M is a positive integer;
• respectively adding a plurality of correcting bytes to the plurality of memory bytes, wherein each of the plurality of correcting bytes has N correcting bits, and wherein N is a positive integer and less than M;
• respectively providing a plurality of reference memory address bytes for the plurality of memory bytes and for the plurality of correcting bytes, wherein each of the plurality of reference memory address bytes has Q bits for labeling underperforming-bit addresses of each of the plurality of memory bytes and each of the plurality of correcting bytes, and wherein 2Q≥M+N;
• and
• detecting whether there are any underperforming bits in the plurality of memory bytes, the plurality of correcting bytes, and the plurality of reference memory address bytes of the memory:
• if no, terminating correction of the memory;
• and
• if yes, labeling the underperforming bits of the plurality of memory bytes and of correcting bytes then using a non-underperforming the correcting bit of the plurality of correcting bytes to replace the underperforming bit of the plurality of memory bytes, thereby completing correction of the underperforming bit of the plurality of memory bytes of the memory.