A short explanation of the CPU as a whole. It's is the brain of the laptop notebook. Sometimes it is also called the processor or central processor.

The CPU for the notebook is similar to a human brain. The CPU is where all the logic is applied. Everything that goes on in your laptop at some point goes through your CPU.

For example, imagine you want to do simple math. Let’s say you want to divide 12 into 2. What happens then? You will input 12/2 on the keyboard of your notebook. The keyboard will then turn this information into a sequence of ones and zeros (the code, which the computer "reads").

After that this will be registered and then sent to the CPU for analysis. The CPU will see that the division logic is required and use its built in logic to send the answer of 6.

As the brain of your refurbished laptop, the CPU allows you to operate software. And, of course, there is a connection between the power of the laptop notebook and the work of the CPU.

The more powerful the CPU the more kinds of applications you will be able to run on your laptop notebook. Software packaging always tells you the minimum amount of processing power you'll need in order to run that program. If you don't have enough power in your CPU, the software will run slowly or improperly.

A top-of-the-line CPU will perform tasks more quickly than an older processor. The difference in speed can be astonishing, especially when doing jobs that require heavy number crunching.

If you are working with graphics and computer assisted design (CAD) you should know that a modern, powerful CPU is essential to manipulate the massive amounts of information found in complex and memory-intensive graphics.

If you have software, which is either old or too sophisticated, then the work of the processor will be inadequate. So, make sure your laptop notebook is a good match for your processor.