Parts of System Unit and Motherboard

It is installed in the back corner of the PC case, next to the motherboard. It converts 120vac (standard house power) into DC voltages that are used by other components in the PC

• Power Supply Unit

• CPU

• PCI Bus/Slot

• RAM

It is a magnetic storage device that is installed inside the computer. It is used as permanent storage for data

• CPU

• RAM

• HDD

• PCI

It is a storage device that uses lasers to read data on the optical media.

• RAM

• Hard Disk DRive

• Power Supply Unit

• Optical Drive

It is volatile memory, meaning it holds data only when the power is on. When the power is off, its contents are lost.

• CPU

• RAM

• HDD

• PSU

It is the main “brain” or “heart” of a computer system. It performs all of the instructions and calculations that are needed and manages the flow of information through a computer.

• RAM

• PSU

• CPU

• HDD

It uses a local bus system; this system is independent of the processor bus speed.

• PCI Bus/Slot

• RAM Slot

• CPU Soket

• CMOS Battery

1. It is a mechanical component(s) that provides mechanical and electrical connections between a microprocessor and a printed circuit board (PCB). This allows the CPU to be replaced without soldering.

• CMOS Battery

• BIOS

• PSU

• CPU Socket/Slot

1. It is a small battery, functions when the system power was off.

• BIOS

• CMOS Battery

• RAM

• PSU

1. It refers to a small memory on PC motherboards that is used to store basic settings.

• BIOS Memory

• CMOS Battery

• RAM/Memory

• CPU

It allows computer memory (RAM) to be inserted into the computer.

• CPU Socket

• BIOS Memory

• RAM/Memory Slot

• CMOS Battery