| 摘要 |
A semiconductor memory device which is highly reliable, is operable at a low voltage and a high speed, and is produced at a high production yield is provided. A nonvolatile semiconductor memory device capable of reading and erasing data and holding the data even while no voltage is supplied comprises a plurality of memory cells each including a plurality of local charge portions each capable of storing a static charge corresponding to the data. Either two of the local charge portions store the charges in a complementary state.
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