What Flash Memory Is
Turns out flash memory is all of the above. Pen drives, key chain memory, stick memory… they're all the same thing. Flash memory is an amazing tool that goes by many names. But at the center of all the names and confusion is the simple fact that flash memory is a form of EEPROM.
"Sure, EEPROM," you might say, "What the heck is that?" Or maybe you might not say that, but I did when someone at the computer center finally told me that's what flash memory is. EEPROM is a type of ROM, or Read Only Memory. And what's Read Only Memory? We'll get into that on the next page, Pen Drive Basics.