Motherboard (Send & Receive information throughout the computer)

Power Supply (Provides Power to the Computer)

RAM (Temporary storage)

Soundcard (Processes audio and helps provide a output through a external device or integrated speakers)

GPU (Generate Graphics which can then be displayed through a external device like a monitor)

Monitor (Output Information)

Cooling Fans (Regulate Computer Temperatures/ensure hardware doesn't overheat)

SSD/HDD (permanent Data storage)

CPU (Processes all information and communicates with your pc to allow functions to be executed)

Bluetooth/Internet/Ethernet (Allow external connections to your pc)

I/O Board (Input/Output information to external devices)^

Printer (Input or Output Information from or to the pc, Ex. Print, Scan)

Keyboard (Input Information)

Mouse (Input Information)