Answer:
Memory Cards
Step-by-step explanation:
Tiny and Flat memory cards are Non-volatile storage devices used for the storage of data in smartphones, tablets and other electronic devices like digital cameras that requires an additional storage device for the secure storage of its data.
The Memory cards also known as multimedia cards are used in smartphones and tablets to complement the internal memory of these devices just like with the way the hard disk complements the storage capacity of the Ram in a computer system. the most popular of this multimedia cards are the Micro SD ( micro secure digital ) cards developed by the secure digital association.