What does mean this....

My power supply says:
+3.3V/22A +5V/32A +12V/16A
What does mean the other numbers? and which is the best number?¿

A computer Power supply provides power to the PC.
The PC operates on different voltages, +3.3v, +5v, +12v and even -12v and -5v.
An axample would be a CD drive may require 12V and a floppy drive may only need 5v.
Think of the power supply as a combination of different batteries.
The second part to your numbers is the Current ratings. As each voltage is separate from the other voltages they all have their own Current rating.
So in your power supply the +3.3v battery/(known as rail) can only provide 22Amps, the +5v rail can only provide 32Amps.
To understand how voltage and current are related you need to know a bit about electricity.
Voltage = current X resistance. Power = Voltage x Current.
Now if a cd drive in your PC required +5v and 16Amps, how many could you have?
The answer is 2, provided they are the same as different CD drives have different specifications.
So if you put 3 of these CD drives in your PC what would happen?
Your power supply will try to provide +5V to all of them and 48Amps (16x3) but this is too much POWER for your power supply to provide, the result is smoke and your power supply will burn.
This applies to all the Voltage rails in the power supply. Therefore the higher the Current rating per Voltage rail, the better the power supply as it can handle more devices which means provide more POWER.
So just incase you are still confused,
The power supply is a combination of batteries, 6 in total. Batteries known as rails.
+3.3v, +5v, +12v, -5V, -12V, +5vsb
Each battery has a Current rating.
The more current a voltage rail can provide, the better the power supply.
Finally incase you thought this, The batteries are always the 6 values I stated as it is a power supply specification, manufacturers try to get their power supply to match these Voltage values.
Now numbers mean something

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