1.3 Unit memory

1.3 Unit memory

1. Secondary Storage

2. Magnetic

   • It is a good storage because it has a big capcity and is not expensie

3. Optical

   • It is a good storage because it is and it has a good reliability and durability (it mean that it can last for a long time and that it wil work consitantly well)
   • Laser light creates marks on the disk

4. Solid State

   • Made of microchips. (switches)
   • It is a good way to stores data because it is reliable and portable