concept sd card in category arduino

This is an excerpt from Manning's book Arduino in Action. Login to get full access to this book.

Ah, memory. Compared to the microcontrollers of 10 years ago, or even regular computers of 30 years ago, the Arduino has a remarkable amount of memory, but even that fills up quickly when you’re trying to log GPS coordinates or keep track of environmental indicators over days or weeks. That’s why computers have hard disks, and it’s also why cameras have flash memory; it’s the latter of these that we’re going to emulate. The SD card in the standard digital camera is a marvel: it’s small, light, and easy to operate, it has no moving parts, and it has a robust storage system.

Figure 12.7. The various connections for an SD card