| 摘要 |
A writing apparatus for a non-volatile semiconductor memory device in which data is written into a flash memory 11 and written data being verified, whereby only data not having been written properly in the memory 11 is rewritten therein, wherein the writing apparatus comprising exclusive-NOR circuit 511-51n which compares write data 31D with verified data 41D and generates write data 51D to be rewritten thereinto, based on a result of the comparison.
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