Computer Corner

One of the more interesting advancements in computer memory technology over the last few years is called flash memory. You may also hear this referred to as a “flash stick,” “keychain drive,” “USB drive” or “memory stick.” All refer to the same device, pictured here (shown slightly smaller than actual size).

Flash sticks, which have replaced floppy disks for data storage & retrieval, come in various memory capacity sizes. The most popular ones currently store around 4 gigabytes (4 billion bytes) of data and sell for about $15 to $20. Larger sizes, such as 8, 16 or even 32 gigabytes, exist. But the price jumps to around $170 for the 32 “gig” size.

What makes these devices so popular is that they are “non-volatile.” This means they continue to hold data (just as floppy disks do) even after you unplug them from your computer. No power is needed to maintain the information.

And compared to a floppy disk, a flash stick is extremely durable. Short of backing over one with your automobile, they are practically indestructible. And carrying around a 4 gig flash stick, which has the approximate storage capacity of 2,800 floppy disks (or a stack of disks almost 22 feet high), is a lot more practical.

But their small size also makes them vulnerable to being misplaced, stolen or outright lost. Most have a small key ring attached to them so that you can attach a strap to them (included with certain brands) and wear them around your neck. And software exists that will allow you to password protect your flash stick, in the event that it is stolen. The thief will not have access to your data.

The current USB (universal serial bus) standard is 2.0, which allows data transfer rates between your flash stick and your computer to approach 500 megabits per second. But the new 3.0 standard, which is due out in 2009, will increase that factor by 10, or to approx. 5 gigabits (625 megabytes) per second. And that is smokin’ fast!

Most flash technology also offers “U3” capability. U3 technology allows you to load a currently growing list executable programs right onto your flash stick, which means you can carry your programs with you and run them on any computer that does not have that program installed. Pretty neat technology, you have to admit!

- 4 -