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System Overview

All the components of a computer are linked together in such a way that it provides users with the utmost pleasure it has to offer.

The CPU (Central Processing Unit) is the heart of the computer because it is responsible for controlling cards, chips and peripherals. Aside from that, performing calculations/managing informaiton is its other responsibility.When the power supply is turned on, electricity begins to flow through all the chips and circuits. Once the ROM BIOS receives the power, it gives commands right away that is controlled by the CPU. The CPU connects to the Hard Drive and RAM through the chipset, a small group of chips that bind together the various pieces at the centre of the computer. It is through the address and I/O bus that the CPU connects to those two components.

The RAM is a temporary storage area and is used for running programs, whereas the hard drive is permanent storage and is the place where files usually are stored.

The motherboard serves as a board that assists in connecting devices. It is an element upon which various compenents are attached to, including the BIOS, CPU, memory and chipset. It's other purpose is to provide a resting place for the power supply, fan and case. The case serves a responsibility to cover up the entire system unit so that no particles enter the components and ruin it from functioning as it should. As well, it serves to prevent outside radiation from entering inside the CPU and other components directly.

The fan is linked to the other components because it is used in a cooling process for three components, which are the power supply, CPU and video card.

The video card needs a fan to cool down because it is always competing for memory which heats it up because it is continuously being used to maintain connection by performing calculations that deal solely with graphics. As a result, it has its own link to the RAM. It needs its own connection because graphics deal with a lot of colors and the theory is that the greater number of colors there are, the more memory they require.

The monitor is linked with the graphics card because it is used to display
the graphics that it interprets so that humans are able to see what the image/video actually appears to be.

The sound card often at times is located on the motherboard, other times it connects directly into the PCI. The sound card is attached to speakers, CD ROMS, and, CD/DVD writers.

The speakers are used to perceive the sound that the card interprets.

The CD/DVD writers are linked to the system because firstly, since the DVD-RW has the ability to play DVDs, it is connected to the video card. Since the video card has its own connection to the RAM, so do these components. Secondly, since there is sound coming from the DVDs, that means they are also connected to the sound card.

Scanners are peripherals that have connections to the video card as well, since they are used to scan images so that they can appear on screen.

The floppy disk drive is a magnetic media that requires electrical energy to read and write. Therefore, the Floppy Disk Drive is connected to the hard drive so that it is able to do its job.

The hard drive is where the files are stored, and to copy or cut them onto a floppy disk, the disk needs to have connections somehow to the hard disk. Once data is already stored on the magnetic media, electric energy isn't required to maintain it there.

The mouse and keyboard are two important peripherals that make using the computer much easier. The keyboard is connected to the microprocessor that observes the switches and changes to the grid that occurs by the pressing of a few keys on the keyboard. It determines which characters are to be sent to the computer. Before they reach the CPU, they are kept in a buffer of memory. The mouse also has a grid, and is used to send data to the computer.