SMPS(switch mode power supply)
If it is a computer power supply it is the box that gives the computer its power from the outlet.
The power supply makes the computer run, without any type of power supply it would be impossible to run a computer. The mains power supply for a laptop and the power supply unit of a desk top, both convert the high AC voltage from the mains power and convert it to low voltage DC, for the electronics of a computer to use.
The computer's power supply powers the computer or any other device. If you want more about power supplies take a look at the link provided below.http://en.wikipedia.org/wiki/Power_supply
power supply
power supply
The use of computer cases with power supply in them is to be able to charge a person's laptop, netbook, iPad, or other electronic device while it is in the case still.
UPS is Uninterruptable Power Supply. It is neither input not output. It supplies electrical power to a computer when the main electrical supply is interrupted. It does not handle data in any way.
A power supply gives electrical power to all the components and parts of the computer. The power supply consists on several wires that connect to specific parts of the computer. Examples are the IDE/SATA CD/DVD Drive, IDE/SATA Hard Disk Drive, the motherboard, etc. Power supplies are only a computer part in a desktop computer, NOT a laptop computer.
An uninterruptable power supply is a power device for a computer (or other things) which is designed never to lose power in the middle of crucial operations. For example, if you're running a computer which is in charge of a critical process and there is a disruption in the power coming into the computer, the uninterruptable PSU (power supply unit) is designed to make sure the computer doesn't stop the process it was working on and lose data.
An uninterruptable power supply is a power device for a computer (or other things) which is designed never to lose power in the middle of crucial operations. For example, if you're running a computer which is in charge of a critical process and there is a disruption in the power coming into the computer, the uninterruptable PSU (power supply unit) is designed to make sure the computer doesn't stop the process it was working on and lose data.
A PC Main Supply is what gives the computer power to operate, in desktop computers they have to constantly be connected to some type of power outlet. Diagram. Plug socket > Cable > PSU (power supply unit) > Motherboard > power to all components in the computer.
Electricicity, a power source, a plug