Nowadays, you cannot live your life without a memory storage device within reach. We use it in almost all institutions for almost all kinds of tasks. Of course we will have too many uses for memory devices; even our ancestors invented so many kinds of these devices. Do you realize that people have been using these devices even a million years ago? The idea of having memories being saved came from our brain: the ability to store and remember things. But we are talking about devices so let's start with what we can recall.
Back then our ancestors used stones and wood to record important events of their lives. The stones remained but the wooden memories faded, some even decayed. Then paper was created, which evolved into notebooks, scrolls, and ledgers. Years later, magnetic storage devices were invented, like tapes and floppy disks, which were kept in cabinets and boxes. Soon enough, new technology was developed. Different kinds of data are now saved in computers. These data that are stored in the computer are called digital data.
For larger capacity storage, optical devices like CDs, DVD's, hard disks, and Blue Ray disks materialized, not to mention the upcoming HVDs. Floppy disks are so vulnerable to magnetic fields that these have become unreliable. Back then, old movies and music were transferred and compiled on CDs with the help of file converters. Nowadays, it's called burning.
It wasn't very long until flash disks were invented for easy data storage and access. Also, the need to worry about magnetic fluxes around has diminished. Flash data storage devices include thumb drives, SD cards, mini SD cards, micro SD, etc. They are easy to use, portable and reliable. The smaller the device, the larger the capacity.
Our memories and data are important to us, that is why we save them. How long do we want to keep them? Do we want to keep them for only a week, a month, a year? Some data and memories should be kept for years! Sometimes we need them for centuries. Where can we save them? CDs and DVDs decay for about 20 years, more or less. Even hard disks collapse! Books are still part of the option but large amount of information today cannot be transferred to books, being fire susceptible and all.
It's a good thing, though, that big companies like Yahoo! and Google are willing to save our stuff for us. Any data can be transferred easily, house to house, state to state, and country to country. The best thing about it is that it's free! All you have to do is save it in your mail. You can have files attached and sent to colleagues, friends, and family. Yahoo has also come up with this amazing tool called Yahoo Briefcase. It allows anybody with a yahoo account to store, manage and access files from anywhere in the world. It's like an extra hard drive, which you can use once connected to the Internet. It even offers a capacity of 30MB, which is very helpful indeed.
It won't be very long before we crave for a device with larger memory. Data will keep on growing.