Computer memory is of two kind’s volatile and non-volatile memory. Flash memory is a non-volatile computer storage that can be electrically erased and reprogrammed. It is a technology that is primarily used in memory cards and USB flash drives for general storage and transfer of data between computers and other digital products. Since it is non-volatile, no power is needed to maintain the information stored in the chip. In addition, it offers fast read access times (although not as fast as volatile DRAM memory used for main memory in PCs) and better kinetic shock resistance than hard disks. These characteristics explain the popularity of flash memory in portable devices. Another feature of this device is that when packaged in a "memory card," it is extremely durable, being able to withstand intense pressure, extremes of temperature, and even immersion in water.

When taking a look at how this device works, you will find that it stores the information that it has in a range of memory cells. These cells store one bit of information, although there are several types of newer flash memory cards available that will allow you to use multi-cell devices, which will allow you to store a lot more information. This technology is easy to write to and to write over and you will find that it is this that essentially makes it so useful.

Electronic memory comes in a variety of forms to serve a variety of purposes. Flash memory is used for easy and fast information storage in computers, digital cameras and home video game consoles. It is used more like a hard drive than as RAM. In fact, flash memory is known as a compact storage device meaning there is no moving parts i.e. everything is electronic instead of mechanical.

We store and transfer all kinds of files on our computers including digital photographs, music files, word processing documents, PDFs and countless other forms of media. But sometimes your computer's hard drive is not exactly where you want your information. Whether you want to make backup copies of files that live off of your systems or if you worry about your security, portable storage devices that use a type of electronic memory called flash memory may be the right solution.