October 26, 2011

Build A Computer From Scratch part II


1 - Case

      Case: the outer shell is composed mainly of metal and plastic. Its main function is to contain and protect all components of our computers. There are various types from basic to those with many additional features. I advice to buy the case that best suits, but if you can buy one with the power supply already included;

It 'a small metal box comes with one or more fans for cooling, the other Party within PC cables come out of various kinds that are used to supply all the computer components. Often the power supply is included in the case, otherwise you have to get one. There are also various power supplies, 350, 400, 500 W; choose the power based on the number of attached devices, the power of the cpu, the absorption of the motherboard and video card. On average, a good power supply is to be 400 but if you want the best choose a 500W.

 

The latest computer fairs were also presented a 1000 W power supplies, of course these objects are given to the professional or enthusiast overclocking

      Motherboard (or MainBoard)

The motherboard is a key component of our computers are connected to it and installed all components.

It 'a plate formed by a number of electronic components. On it houses of CPU, attach some power cables, are the sticks of ram, attach hard drives, CD burners, DVD and CD players via special cables, also attach the video card and other PCI cards (eg sound card).

The motherboard on the market are many, choose one that fits the type of CPU that you want to host (check that the socket es.775, 478) is the same CPU), having at least one or two attacks (IDE hd, mast. and read. CD-DVD), some attachment (SATA HD), an attack on PCI-Express or AGP (video card), some attacks and at least two PCI slots and banks of RAM;

      CPU (processor)

Central Processing Unit or central processing unit: the brain is practically in our computer that will run in record time all operators who provide the computer, there are several types on the market (AMD, Intel, Athlon, Duron, Sempron, PIII, PIV , Celeron): choose one that is compatible with your motherboard (see the scoket 775 or 478) and watch as a parameter for selecting the speed (or frequency) which is the clock speed at which the CPU executes instructions and is expressed in GHz (2.8 - 3.0 - 3.2 - 2.4), the more number is higher than the CPU is powerful and fast;

      CPU Cooler
It 'a device composed of metallic copper, aluminum, or both, is located right above the CPU, its function is to move away (disperse) the heat from the CPU and to allow the continuous cooling: keeping the temperature low, the CPU can work better and avoids the risk of melting the same for overheating in the box if you buy the cpu fan is already included in it, or have bought one compatible with your CPU;

      Hard Drive
Hard disk (or disk) is a magnetic media enclosed in a rectangular metal box so you can not see directly but it will seem like a simple box, its function is to store all data on your computer, from files to the hard drives ... programs differ in capacity, given in GB (Giga Byte), which can range from 40GB up to 700GB or more. Choose the cut based on the amount of data you plan to store on your computer. If you often store many pictures, install programs or many games choose one of greater capacity. Also important is the speed of rotation, expressed in rpm discs, which indicates how fast the drive writes the data, the current standard is 7200 but if you want, there are also 10000rmp! Last factor, there are two types of hard drives, the EIDE and SATA (Serial ATA): what distinguishes them is the different type of physical attack on the motherboard, but logically have more SATA data transfer rates;

      RAM
Memory RAM (random acces memory) is considered the main memory of the computer that provides access to data stored in any order, unlike hard disks and other media, this type of memory stores data for use in the CPU during 'development of processes, data that are overwritten by other final when no longer needed: the ram is a type of volatile memory because it resets the computer turns off. The RAM is divided into banks or modules that can have varying sizes, ranging from 64 to 128 -256 -512 mb to 1 to 2 gb, if you have a powerful processor and a complex operating system it will take a little more RAM for allow operation at optimal speed of the PC, so if you have windows xp and enough programs I recommend at least 512mb of ram. If your motherboard has more than one slot you can put more modules of ram (a tour slot) and then expand it later. There are various types of RAM, mainly DDR, RIMM, DIMM, the standard most widely used of which there is currently DDR I and DDR II, the second is the newer and faster: the former have a refresh rate of 400Mhz, the second of 533Mhz. In addition to designating the Rams are the initials PC3200, PC2700, so when you choose the ram first check what kind of RAM your motherboard supports;

      Optical Drive
CD-DVD Optical Drive: Optical drives are drives that can read removable media like CDs and DVDs in various formats and send the data contained therein to the computer. They are now a standard units that are able to read both CD and DVD, but what counts are the formats that are able to read, CD ± R, CD ± RW, DVD ± R, DVD ± RW, DVD- RAM, and finally the latest models are able to read DVD ± DL dual layer dvd's famous words, the double-layer DVD recording, which can contain up to twice the normal content of a DVD. In order to choose the CD / DVD choose one that can read all common formats if he's the best bets of the dual-layer DVD. Important is that you check the speed of reading generally expressed by a number followed by "X", a 48X or 52X is good;

      Floppy disk drive
Floppy disk drive: is a unit that can read magnetic media, the traditional 3.5-inch floppy. This type of unit is now little used to store data because of the poor., 1.44MB, but you never know when you'll have to open a floppy or load data on it;

      Video Card
Video Card: important component of your computer, you need to process and show the result on the screen so the user can interact with the operating system via a graphical interface. There are two standard video cards, which also depends on the type of attack on the motherboard, AGP 8x and PCI Express. The latter is the most advanced and fast so if you were to make a new bet on a PC motherboard that supports this standard. The capacity and speed of image processing is measured by the videoram MB (VRAM) which is the memory that the video cards to have them to process and is always measured in mb, if you run processes that require high performance video buy a video card with enough ram in general sufficient for normal operations 512mb.

Sound Card

Sound card (optional): The sound card is a PCI device, that attaches to the PCI sockets, its function is to process the audio streams into and out of your computer, attach it to the sockets of external units how checkouts. Most motherboards currently on the market has already integrated sound card, if you do not have to put it to hear the audio and if you already have at your discretion you can still install a second.

      Cables

Cables last but not least, check that box on the motherboard are included all the cables for hard drives, CD / DVD player and burner, floppy cable, and if enough other procuratevene

The Steps To Assemble the computer

First take the case, disimballatelo and open on the side which bears the two or three screws that secure the panel, if you sometimes have greater convenience in the assembly open both sides (when possible), once unscrewed the screws pull the side panel toward you and you will see that you will march;

Now switch to the motherboard that you must complete before placing it into the case. First you have to place the CPU in its own slot on the motherboard: lift the lever that serves as a lock for the CPU or the entire rectangle of metal that is used to lock the CPU. Insert the CPU into the socket called the pins (small golden metal tips) down being careful to match the golden arrow or dot on the CPU with the sign in bay, the CPU itself should come naturally, without difficulty, After resting on the socket, if the effort you have inserted the wrong way.

In the figure is found that an AMD processor intel (very careful)

Once positioned the CPU and put it back carefully lever latch and / or covers you have to go to the cpu fan mounting, each CPU has its own fan that is placed directly above or in contact and is blocked by the hooks which are inserted directly into the motherboard or through a system of plastic hooks that attaches to a mount already on the CPU, then placed the fan and secure it; In general, first fastening system is used in the cpu socket 775, the second CPU in the socket 775.

Once the installation is complete you have to put the fan in the counter or sticks of ram into the slot, making sure that the part with the gold leaf are facing the motherboard and ram it engages in the slot to perfection (the ram is bounded three-quarters of a stop in a vertical cut edges and, as a guide to follow the verse) to insert the RAM into the slot you have to push out the two plastic side latches and then close them once inserted the ram, if is properly inserted in the two locks will get stuck in the side holes of the ram;

I remember at the moment there are 3 types of RAM: DDR, DDR2, DDR3

Once you have completed these steps you have to prepare the case for the motherboard: resting on the vertical part of the motherboard inside the case and note which has holes for the screws, the board and what are the corresponding holes on the case, then take the legs, including the box of the motherboard and screw into these holes, then take the motherboard, and you will see that riappoggiatela will be slightly raised and put in the screws and screw holes: have thus fixed the motherboard.

Now you have to set hard drive, floppy drive and CD burner, placing them in the structure and fastening them with screws.

To insert the CD / DVD burner and you have to remove one of the houses in front of forntalini cover and insert the unit into the slot, then fasten with screws.

To mount the hard drive you have to proceed from inserting it into the slot until it stops and then securing it with screws inserted into the appropriate holes.

You must then proceed by attacking all power supply cables in their proper place and placing the communication cables between the motherboard and peripherals.

All 'hard drives you connect the power cord sata if sata hard drives do (in the picture you will see a sata adapter for the power supply [not all power supplies have many SATA connections, so choose one with care];

In the case of hard drive Eide standard power cord

Then attach the cable sata hard drive and communication into the socket on the motherboard if you have a sata hard drive

if you have an EIDE hard drive (PATA) attached to the communication cable Eide (PATA).

Some types of cables and / or jumpers (for overclocking and other)

The floppy drive is connected to the motherboard instead of the floppy cable, a cable all'eide similar but slightly smaller and floppy drive power cable is attached to the floppy.

Power cable of the cables floppyCollegate power of special attacks on the motherboard.

If you now enter the video card and any other PCI cards (sound).

To insert the video card is sufficient and appropriate slot located by following the arrangement of interlocking plates inserted the video card slot. For the sound card and other pci cards you have to do exactly the same thing by putting them in PCI slots, usually white.

The cards you have to set them back down to the front of the computer or with screws or with a simple joint, depends on the type of houses so I refer you to the instructions of the same.

The only thing left to do is locate the wires that come out from the front of the houses within the PC and connect to the motherboard according to the scheme indicated by the motherboard manual: the cables are power, reset, hdd led ... Once these cables properly connected the front panel of the case work, and you can safely turn off and reset the computer directly from it.

At this point attach the computer screen, speakers, peripherals and see if both turns. If you start properly, you must only install the operating system (as will appear warning you) and your computer will be complete. If you do not turn on properly re-read the guide to try to understand where you are wrong!

If the computer works well as part or Close the sides of houses previously removed.

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