1.3

1.3

1. Types of storage - Optical Magnetic Solid State

   • Optical
     • A laser light marks in a pattern on the disk
     • A laser light detects where the marks and translates this into a readable format
   • Magnetic
     • Read/write moves across the medium and changes the magnetism of a specific part of the medium
     • One level of magnetism will be 1 and the second will be 0
   • Solid state
     • This is made up of microchips (switches)
     • The state of the switches determines whether its a 1 or 0 that is being stored

2. Capcity

3. Speed

4. Portability

5. Durability

6. Reliability

7. Cost

8. GB - 1024 KB

9. KB - 1024 bytes

10. Byte - 8 bits

11. Nibble - 4 bits

12. Bit - binary digit, single for 0