NOTES:

- optics means light

- memory is erased when the computer is shut off

- memory is open

- storage is stored away

- didnamic means changes

- optical= stuff you can see

- DO NOT put a CD ROM in a microwave!!!

- there are 2 parts to a CD ROM

1) label

2) reflective metal survice

- cd's have millions of pits they are called bumps.

- 1 mb is a million bit

-700 million x 8= 5 billion little pits on a disc

- on the back of a hard drive. There is a printed circut card drive.

- if a cd is scratched up the brinory code get's messed up.

- stuff is stored in cd's by pits

- hard drive and floppy disc are heat stored optically

- in floppy disc there are magnets

- hard disc are hard and floppy disc are floppy.