system unitis
by nattakarn chantaloon

1. Drive bay(s)
1.1. A drive baytypically holds disk drives
2. Power supply
2.1. The power supplyconverts the wall outlet AC power into DC power
3. Sound card
4. Video card
5. Processor
5.1. Multi‐core processor
5.2. Dual‐core processor
5.3. Quad‐core processor
6. Memory
6.1. Volatile memory
6.1.1. RAM
6.2. Nonvolatile memory
6.2.1. ROM, flash memory, and CMOS