SECONDARY MEMORY (First Year)

SECONDARY MEMORY:
This type of memory is not volatile i.e. it is not a temporary memory. The data is stored permanently in secondary storage devices. The most common secondary storage devices are floppy dis, hard disk, tape and CD.
Mostly secondary storage devices are made by magnet media. The iron particles spread on surface of the disk and the data stored in the form of magnet. If the particle is magnetized then this is know as 1 other wise it is know as 0. Secondary storage devices have more space as compared to primary memory but less in speed.
FUNCTIONS PERFORMED BY THE MEMORY
1. Store temporary data.
2. Store permanent data.
3. Open application programs.
4. Assign unique address to each of the data items.
5. Store processed data.
6. Store operating system.