What does it mean when reading from bubble memory is described as nondestructive?

When reading from bubble memory is described as nondestructive, it means that the data is still present after being read. In nondestructive reading, the process of accessing the data does not affect its integrity or availability for future access. This is a significant feature for any type of memory, especially in applications where data retention is critical.

Bubble memory is a type of non-volatile storage that retains data even when the power is turned off. When reading from this type of memory, the information remains intact, allowing it to be accessed multiple times without any loss. This contrasts with destructive reading methods, where the act of reading the data alters or erases it.

Other options describe scenarios that don’t align with the definition of nondestructive reading. For instance, altering the data after reading it or damaging the storage medium during the process contradicts the essence of nondestructive access. Also, any references to access times do not pertain to the concept of destructiveness during the read operation.