| 摘要 |
The input data at address 0 is "00000000", including many "0"s. The data at address 0 is inverted to "11111111". At the same time, flag information "1" indicative of inversion is written into the flag bit of the same address 0 . The input data at address 3 also includes many "0"s. Therefore, the data of address 3 is inverted, and flag information "1" is written. The input data at addresses 1 and 2 includes more "1"s than "0"s. Therefore, the data is not inverted, and flag information "0" is written. With regards to the written data, only the data at an address whose flag signal is "1" is inverted again in a reading mode to be eventually read out as a data output signal.
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