CHAPTER 7 - STORAGE

There are two types of storage: 

• Primary (RAM) : volatile / not permanent 
• Secondary : Permanent / not lost even the computer turn off 

Example of Secondary Storage: 

• Hard Disk 
• Memory Cards 
• Cloud Storage 
• Optical Disks 
• Magnetic Stripe Card and Smart Cards 

Three types of Optical Disk:

• CD-ROM (read only. meaning you can only play the song or video given) 
• CD-R (can be write but ONCE only. after burn (copy file to CD) you CANNOT add other file to it 
• CD-RW (can write and read for many times. the function is just like USB. you can delete, alter file, copy etc many times you want)