Flash memory

This is the newest kind of memory. It uses the very latest technology. Because there are no moving parts as there are with hard and floppy disks, data stored on flash memory is much harder to destroy. Flash memory is not only used in your computer, but also in your PDA - personal digital organizer - your mobile phone and many other gadgets. Most computers need a reader attached to a USB port to read flash memory.

Here are some of the more common types of external storage:
Compact flash
- used in many cameras. Compact flash storage can be up to many gigabytes in size.

Memory stick
- developed by Sony, memory sticks can be used in most Sony laptop computers without a reader.

SD
- is used in many music players because SD cards have technology that helps with DRM (digital rights management) which allows the owner of the song to control where it is played.

Flash keys
- are keys with flash memory and readers built in, so they can be put into the USB port of any modern computer and laptop.