CPU is short for Central Processing Unit. Basically it is the brains of your computer and is sometimes called the Processer or Central Processer. The CPU is similar to the human brain. everything that goes on inside you PC at some point will go through your CPU.
The more powerful your CPU the more aplicatipns you'll be able to run on your system.
The more powerful your CPU the more aplicatipns you'll be able to run on your system.