Building a computer yourself can be more cost-effective than paying for a brand name computer out of a box. There are several different parts to buy, but when purchased individually they will not always add up to be very expensive. It is also easier to upgrade a computer you assembled yourself by switching parts out one at a time as needed.
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The motherboard is the main circuit board of a computer and most of the other parts connect directly to it.
The processor is also sometimes knows as the central processing unit, or CPU, and is in charge of carrying out the operations programs use to run.
The hard drive is the storage unit of the computer and holds the operating system as well as your personal files.
The video card processes the visual information for computer programs, such as DVD watching software and video games.
The sound card processes the sound information and is what the computer speakers connect to.
RAM, also called "memory," is temporary storage for the processes the CPU is carrying out, so the more RAm, the faster programs will run and the more programs can run simultaneously.
Optical drives, also called disk drives, allow a user to use removable media such as CDs and DVDs.