computers are only 1s and 0s this is called binary code
optical storage
is a method of reading and writing data to dics using a laser
is a method of reading and writing data to dics using a laser
a CD is made up of layers in the CD it haves flats and bumps this creates a spiral fun size lasers hit the bumps and flats to read the disc.
types of storage
CD
-music
-software
-0.7 GB
DVD
- movie
- games
- software
-4.7 GB
blu ray
- HD movies
- 25 GB
CD
-music
-software
-0.7 GB
DVD
- movie
- games
- software
-4.7 GB
blu ray
- HD movies
- 25 GB
The transfer rate of a CD is 7,800 KB and the cost is around