memory of computer

1. "MEMORY OF COMPUTER"The memory of computer are as follows :  
2. Memory representation
3. registers, cache memory, primary memory), secondary memory (magnetic disk, optical disk, magnetic tape)
4. Registers, cache memory
5. Primary memory—Random access memory, read only memory
6. RAM—DRAM, SRAM, memory modules—DIM, 
7. ROM—PROM, EPROM, EEPROM, flash memory
8. Secondary memory
9. Access types of storage devices—Sequential access devices, direct access devices
10. Magnetic tape—Working of magnetic tape, features of magnetic tap
11. 
    
12. Floppy disk
13. Hard disk
14. Zip disk
15. Optical disk—CD-ROM, DVD-ROM, 
16. CD-R
17. 
    
18. DVD-R
19. Magneto-optical disk
20. Using the computer memory