Computer Memory and YOUR memory
Hard-Disk Drive = Long term memory
A hard-Disk drive is where all of your pictures and documents are saved, its just like your long term memory which saves images of things you have seen, just like a computer!
RAM (Random Access Memory) = Short Term Memory
RAM is where your current task will be stored it wont stay there forever. It is like when you are making a quick decision or thingking about what to say next.