storage devices and their categories

there are several different types of storage devices. the purpose of storage devices is to save information, display it, or erase it. storage devices can be classified as portable memory. short term memory, and long term memory. one example of a storage device is a RAM( random access memory). this type of memory involves data being stored in a computer, but when a computer is turned off, the memory is erased. this example of short term memory. an external hard-drive is an example of portable memory. you save data in it, and then u can plug into any computer to access your data. A floppy disc is an older example of memory and it is also portable. however, its storage capacity is very low, and is very fragile. A hard drive is an example of long term memory, because it is incorporated in a computer and cannot be taken out. -