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a. Hard disk
- It is located within the CPU
- Every information of computer is embedded here
- It is an electronic device that circuit.
- It stores information ranging from 2000MB
Floppy disk or diskettes
- It can be taken from one place to another.
- They are not residence in computer system
- It is very cheap to acquire.
- It comes in different sizes like the 51/4 inches and 31/2 inches
Compact disk (CD)
- It is used as secondary, storage medium.
- It stores information more than that of the floppy disk.
- It is the best because, it uses the laser technology.
- The information here cannot be changed because they are sealed. This is why they are called CDRQM.