Maybe you know, maybe you don't. Chances are you don't since you are reading this article...

If you want to learn the basic function of the CPU let's see what the abbreviation CPU means because it is important to the discussion and answer to "what does a cpu do?"

CPU is the short name for Central Processing Unit, and is pronounced as separate letters. Next comes the short explanation of the CPU as a whole. It's is the brains of the computer. Sometimes it is also called the processor or central processor.

The CPU will likely be the larger of the chips on the mainboard inside your PC.

If you bought a new computer, the CPU will be covered by a heatsink and fan. Keep in mind that the heatsink and fan are extremely important. If there are no such components the CPU would get too hot to work and possibly melt or burn out. And be very careful when you want to replace the fan if you need to have a look at your CPU.

So, it is time to move on the performance of your CPU and the basic functions that it carries out.

As it was mentioned before, the CPU for the computer is similar to a human brain. It is artificial but the CPU is where all the logic is applied. Everything that goes on in your PC at some point goes through your CPU. If you cannot get the idea, here is a simple example which will probably help you get the point.

The computer code is basically mathematics. For example, imagine you want to do simple arithmatic. let's say you want to divide 12 into 2. What happens then? You will input 12/2 on the keyboard of your PC. 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 addition logic is required and use this inbuilt logic to send the answer of 6.

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

The more powerful the CPU the more kinds of applications you will be able to run on your system.

Software packaging always tells you the minimum amount of processing power you'll need to use 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 you should know that a modern, powerful CPU is essential to manipulate the massive amounts of information found in complex and memory-intensive graphics.

And now, let's say a few more things about the work of the CPU and its performance...After all, this is the goal of this article, to give you enough useful information, which can help you.

The CPU's performance is determined in two areas: internal and external. The internal performance means the performance within the central processor. The chip's design (CISC or RISC), architecture (i.e., 486, Pentium or PowerPC), clock speed and memory caches all influence how quickly the CPU can perform tasks. And the external performance refers to the rest part of the system.

Have I answered the questions, What Does a CPU Do? I hope so. But here's more...

The amount of RAM, the capacity of the data bus and the motherboard circuitry all influence what any CPU, no matter how powerful, can accomplish.

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

There's little you can do to remove built-in roadblocks to CPU performance, but you can always add more RAM, especially if you have only four to eight megabytes.

Modern operating systems require at least 32 megabytes to provide good performance, and more megabytes is even better. Memory is cheap; double the amount you have now and you'll think you've just bought a new computer. These days 256-512 megabytes of RAM is the norm for new computers.

If your job, or hobby is connected somehow with graphics, then you surely will need more RAM.

An old video adapter can also slow things down. Consider a new video adapter with more built-in memory and a coprocessor that will take the load off your CPU.

Well, we have finally reached the end of this article. Now, you have surely learnt more things that you used to know before you read this article. And you have hopefully found the answer to "what does a cpu do?"

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