How computers work



This is a quick break down of how a computer works and how the different components of a computer affect a computer.


Iíll start by listing the components that makeup a computer


   This is the engine of the machine. The CPU (Central Processing Unit) is the component that handles the processing of data for the computer. It is measured in Hertz. Each Hertz tells the speed that the processor processes data per second. As data enters the processor the processor cycles through the data at the Hertz rate, for example a 1 GHz CPU processes data at 1,000,000,000 cycles per second.
The motherboard contains the data bus for the computer. All the components of a computer plug into the motherboard and the motherboard coordinates the data movement between the different components. The speed of the data bus offered on the motherboard will determine the limitations of the computer itself. The data bus is determined by the chipset that the motherboard has.
This is the memory of the computer. RAM (Random Access Memory) has a huge impact on the speed of the computer. The more RAM a computer has the faster it will perform its task. RAM is the working memory of the computer and is much faster than any other data storage device on the computer. RAM can feed data to the CPU faster than anything else that a computer has to offer.The more RAM you have that faster your CPU will get the data/information it needs to process.
Hard Drive  


    1. The Hard Drive is a mass storage device and is the heart of the computer. A computer is a huge file cabinet that is able to create and store digital content. The hard drive contains all data\information the computer will use and is what the computer boils down too. If you loose your hard drive youíve lost all work and all information youíre computer is capable of handling. It is the single most important component you have and it can be transferred from one computer to another if needed. The hard drive is measured in Bytes. Each Byte is 8 bits. The larger the number in Bytes the computer hard drive holds the more information and data it can hold.
    2. Make no mistake of it; the hard drive is the single most important part of the computer. Spend the most for your hard drive and get a hard drive that offers the longest possible warranty the manufacturer has to offer to ensure that the hard drive has been built with the highest quality components and the highest possible quality standards that company has to offer.




    1. I grouped all these into one component because they perform the same functions. These kinds of drives offer a way to transfer data from one machine to another in a standardized format. With the invention of, and ubiquity, of the internet these data formats are almost irrelevant. However, I list them because they still make up a computer.


    1. The CD-ROM Drive or the Compact Disk (CD) is the earliest and smallest storage offering of all listed drives. It holds a maximum of 700 MB.


    1. The DVD (Digital Versatile Disk) is the next largest and second generation of a standardized format disk. It holds a maximum of 9.4 GB of data standard.


    1. The BLU-ray disk is the latest and largest in standardized (though not fully embraced) formats. It holds up to 50 GB of data per disk.


SD Card  
    1. The SD (Secured Digital). Is a standardized format used for cameras, video cameras, PDAs, mobile phones, and GPS receivers. It is essentially a data transfer means in a smaller form factor than CDís,DVDís, and BLU-ray.
SSD Disk   
    1. The SSD (Solid State Drive) is an alternative mass storage device to the hard drive.


How does it all work together?

(I will try to keep this as simple as possible.)


The CPU is the engineof the computer and determines how fast the computer processes the data it receives. The more powerful the engine or CPU the faster it computes. The RAM holds the data in order to send it to the CPU faster than the hard drive can. The more RAM a computer has the more data it can hold and the faster the CPU will receive the data that it needs to process. The Hard Drive is a mass storage device that feeds information/data to RAM to feed to the CPU then it stores the processed data. If the computer does not have enough RAM to handle the amount of data the CPU is processing then the computer has to send information from the Hard drive to the CPU and the hard drive is not nearly as fast as RAM is because it has to access information from all over the disk while writing to the disk and is strictly limited to the read/write access of the mechanical hard drive as opposed to the Random Access Memory which is all digital. The Motherboard determines the speed at which the data is transferred from one component to another within the computer given the limitation of the component itself. In other words the motherboard offers a unified data transfer speed between components that are attached to it.