The common components of a computer system include the CPU for executing commands, the hard drive for data storage, memory chips for holding data, the motherboard containing the CPU and expansion slots, RAM for short term storage, the video card for displaying graphics, and the power supply for converting power for the computer components.

1. Common components of a
computer system

2. CPU
• The Central Processing Unit (CPU) is responsible for
interpreting and executing most of the commands
from the computer's hardware and software

3. Hard-drive
• hard disk drive (HDD) is the mechanism that controls
the positioning, reading, and writing of the hard
disk, which furnishes the largest amount of
data storage for the PC

4. Memory
• Memory is data storage that comes in the form
of chips. Memory is usually used as a shorthand
for physical memory, which refers to the actual chips
capable of holding data

5. Motherboard
• Motherboard is the main circuit board of your
computer. You'll find inside the motherboard: the
CPU, the ROM, memory expansion slots, PCI
slots, serial ports, USB ports, and all the controllers
for things like the hard drive, DVD
drive, keyboard, and mouse.

6. RAM
• RAM is the short storage area for your PC. Often
called memory or system memory RAM is just an
electromagnetic storage that loses all its data once
the power has been removed

7. Video Card
• The video card is an expansion card that allows the
computer to send graphical information to a video
display device such as a monitor or projector.

8. PSU (Power Supply)
• The power supply unit's job is to convert the power
provided from the outlet into usable power for the
many parts inside the computer.