A CPU, also known as a Central Processing Unit or a processor, is the most important element of a computer. The CPU is like the "brains" of a computer
A CPU cooler is a device that draws heat away from a CPU and other hot-running chips such as a graphics card, to help cool it down.
RAM, or Random Access Memory is the place in a computer, or other device, where the operating system, application programs, and data in current use are kept so they can be reached quickly by the device's processor.
GPU, also known as a Graphics Processing Unit, is a programmable logic chip, or processor, specialized for display functions. It renders images, animations and video for the computer's screen.
A motherboard is a printed circuit board containing the principal components of a computer or other device, with connectors for any other circuit boards that can be slotted.
A storage device is a device that is used for storing, porting and extracting data files and objects. It can hold and store information both temporarily and permanently, and can be internal or external to a computer, server or any similar computing device.There are a lot of different kinds of storages, but the main ones for computers, are hard drives, and solid state drives, or an SSD.
A computer case, also known as a computer tower, system unit, or simply case, contains most of the components of a computer, not including the keyboard, display, and mouse.
A power supply unit converts mains AC to low-voltage regulated DC power for the internal components of a computer.
The inside of a PC. The link sends you to a website where you can build your own computer.
The inside of a Mac. This link sends you to the same website as the link above.