Device for checking a pilot character written into a memory.

摘要

The device comprises an erasable memory (1), a pilot character (pilot) written into the memory, control circuits (2-15) for the memory authorising the reading of the pilot character and prohibiting the writing of data into the area of the memory reserved for this pilot and a comparator (16) for verifying the conformity of the pilot character. The non-conformity of the pilot character signifies that the memory has been exposed to radiation or to electrical disturbances.