SD Cards

SD cards are used to store memory, whether it's photos on your camera or games on your Nintendo DS. And because of their compact size, this allows them to be easily stored in devices such as an iPhone or a Nintendo Switch.

In 1999 Panasonic, Toshiba, and Sandisk created and manufactured a standardized format for holding computer data known as a Secure Digital card (SD card). 

The three companies later made a smaller version of it known as the micro SD card.

SD cards are made of a small memory chip that is protected inside a plastic case. They have pins made of a conductive metal that allows the memory to flow in and out of the card. 

Each pin has a specific function. For example one of the pins powers it and four of the pins are connector data. Connector data collects data from several sources and travels to one specific destination. 

The way SD cards work is they use flash memory so they don't need a constant power source to function. Micro SD cards can be placed in an adaptor that allows it to be slotted into regular SD card slots.