How big is a million?
Imagine spending one dollar every time the count below counts up once. How long would it take to spend a million dollars?
How much money do you actually spend every week? How long would it take you to spend a million dollars at this rate?
In the 1980's, PCs had a million bytes of memory (one megabyte). Now (2007), they have a billion or more (one gigabyte). Hard disks now come in sizes of one terabyte - a thousand billion.
The computer display you are looking at is made out of about a million pixels. Digital cameras can record images with 10 million pixels.
How big is one million? Wait and see.
Not big enough? Wait for one billion.