The Components of System Unit

1. motherboard

1.1. chipset

1.1.1. north bridge

1.1.2. south bridge

2. Expansion Slots and Adapter Cards

2.1. Plug and Play

2.2. Memory cards

3. Ports and Connectors

3.1. USB port

3.2. Firewire port

3.3. Bluetooth port

3.4. SCSI port

3.5. eSATA port

3.6. IrDA port

3.7. Serial port

3.8. MIDI port

4. Buses

4.1. PCI bus

4.2. PCI Express bus

4.3. Accelerated Graphics Port

4.4. USB and FireWire bus

4.5. PC Card bus

5. Bays

5.1. drive bay

6. processor

6.1. Multi-core processor

6.2. Dual-core processor

6.3. Quad-core processor

7. Data Representation

7.1. Analog

7.2. Digital

8. Memory

8.1. Volatile memory

8.1.1. Dynamic RAM

8.1.2. Static RAM

8.1.3. Magnetoresistive

8.1.4. Memory cache

8.2. Nonvolatole memory

8.2.1. Read-only memory

8.2.2. programmablr read-only memory

8.2.3. Flash memory

8.2.3.1. CMOS

9. Power Supply