Computers can have more than one fan in the case. The purpose of the fan(s) are to circulate air, drawing air in from the outside and blowing it through the power supply, over the CPU and other heat generating components to remove the heat they generate and carry the heat outside the computer box or cabinet. Without this, the heat buildup in the computer can cause components to overheat and fail leaving you with a computer that does not work.
The main thing that rotates inside a computer is the hard drive. The hard drive is a disk that stores all your computer's information. The information is stored magnetically, this is why a magnet can be so damaging to a computer. Also, there are fans inside a computer that help cool the components.
It is important because it helps to prevent overheating inside your case. A processor runs very hot, A video card runs hot. That's why there are usually some fans inside the case. Although they do help it's best to maximize the cooling inside your computer. The lower temperature it operates at the more you can push it. I run my case open aired, maybe that's a step too far but it does help. Airflow is VERY important though, don't unplug your fans unless you want your components to overheat! There are some extra cooling fans you can buy at fry's or other computer components stores, called PCI fans. They boost the cooling a a little, that should help.
Increases air flow which keeps internal components from overheating.
Components inside Computer (CPU) are Motherboard, Processor, RAM, Harddisk drive, Optical Media drive, SMPS etc.
Some components that go inside a computer enclosure include the motherboard, CPU, CD drive and hard drive. Another component that goes inside a computer enclosure is the RAM.
A basic computer should have at least two fans. One fan should be inside the power supply unit and the other fan should be on the processor. Extra fans inside the computer are optional.
how dose a computer work with the 7 components
This will generally depends on the components of your computer and what it's tolerances are. Some cases will commonly get to 100+ degrees F inside and others are layered with fans and such to keep the temp down. As a rule, don't let it go much over 100 degrees F. If it's that hot in the air, it's reaching bad temps on your motherboard and various components.
Fans dying/randomly turning off
Computer fans that you can buy at a electronic store and there are fans inside the laptop or desktop itself.
The monitor and several components inside the cpu. they should be properly disposed of.
A "mobo" is short for "motherboard", which it means the system board inside your computer that houses all the components to make the computer work.