The Components of the System Unit

1. Processor

1.1. Control Unit

1.2. Arithmetic Logic Unit

2. Data Representation

2.1. Analog

2.2. Digital

3. Memory

3.1. Volatile memory

3.1.1. Ram

3.1.1.1. Dynamic Ram(DRAM)

3.1.1.2. Static Ram(SRAM)

3.1.1.3. Magnetoresistive Ram(MRAM)

3.2. Nonvolatile memory

3.2.1. Memory Cache

3.2.1.1. Rom

3.2.2. Flash Memory

3.2.2.1. Cmos

4. Expansion Slots and Adapter Card

4.1. Expansion Slots

4.1.1. Plug and Play

4.1.1.1. Memory Card

4.2. Adapter Card

4.2.1. Sound Card

4.2.2. Video Card

5. Ports and Connectors

5.1. Firewire port

5.2. Bluetooth port

5.3. SCSI port

5.4. eSATA port

5.5. IrDA port

5.6. Serial port

5.7. MIDI port

6. Buses

6.1. PCI bus

6.2. PCI Express bus

6.3. Accelerated Graphics port

6.4. USB and Firewire bus

6.5. PC Card

7. Bay

7.1. Drive bay

8. Power supply

9. Putting It All Togeter

9.1. Power

9.2. Enterprise

9.3. Home

9.4. Small office/Home office

9.5. Moblie