A computer uses RAM to hold temporary instructions and data needed to complete tasks taken from the hard drive. There are many removable devices and formats out there to choose from. Here are some of the most popular formats that are currently available as standards. Fix Formats Computer RAM can be viewed as storage because you can store data in it. However, the data held is only temporary because it will be lost when the computer is switched off.
RAM is also the fastest and most expensive storage when comparing capacity vs. cost.
With the recent popularity of digital cameras, flash memory cards are available as an upgrade for capturing images in higher resolutions. These are one of the most reliable storage media known. Panasonic invented the PD drive some years ago. A blank CD-R cost 10 a year ago, now you can pick one up for around 1.50, it is still coming down. It makes an ideal format for archiving.