In computer studies, the term 'backup' is used in two perspectives i.e.
a power backup is a gadget that can be used as an alternative to provide power to the computer once the main supply fails. Examples of these gadgets include:
Data backup or backing up data means making of copies of data or programs in case the originals are corrupted or lost. This process will prevent the owner from losing private and confidential data and programs just in case the system malfunction. All storage devices can be used as data backup devices. Other devices include: