backupchip
nounUK /ˈbækʌp tʃɪp/
US /ˈbækʌp tʃɪp/
A backup chip is a little computer part that keeps a copy of important information safe.
The robot saved its favorite game on a backup chip so it would not lose it.
OTHER MEANINGS
2. A second computer chip kept ready to replace one that breaks.
The engineer kept a backup chip in the drawer in case the main one failed.
3. A chip that holds a saved copy of data in case the original is lost.
The phone stored your photos on a backup chip.
4. A small helper chip that takes over when the main chip stops working.
When the main chip got too hot, the backup chip started working instead.