Anatomy of a Computer

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by Jsquaredspirites
Last updated 8 years ago

Computer Science

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Anatomy of a Computer

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Expansion CardsExpansion cards are electronic parts you can add onto the motherboard to enhance the performance of the computer. A video card/graphic card enchances visually on a computer. A sound card enchances the quality of the sound from the speaker of your computer. A network card is used so that your computer can connect to a network and access the internet.


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MotherboardThe motherboard is the computer's main circuit board, the motherboard connects to every part of the computer indirectly and directly. The motherboard holds everything together, basically. For example the RAM, the hard drive, the CPU, the power supply unit and everything that connects to the computer physically.

RAM (Random Access memoryThe RAM of a computer is to temporarily store data. Once the computer is turned off all the data in the RAM will be erased. RAM is good if you want want to run multiple programs at once without problems. RAM is measured in megabytes (MB) or gigabytes (GB). The more RAM you have, the more things your computer can do at once.

The Power Supply UnitThe function of a power supply unit is to pump power into every part of the computer. You can also think of it as a heart. The heart of a human pumps blood through veins just like how the power supply unit pumps power through cables. The Power Supply Unit coverts the power from the wall outlet to the power the computer needs.

CPU/ProcessorCPU a.k.a (the brain of a computer), is located on the motherboard. Its function is to process commands/instructions. To determine how fast a CPU can process commands, you will need to know its speed. The speed of a CPU is measured in megahertz (MHz) or gigahertz (GHz). The CPU always over heats so there is a thing called heat sink that absords the heat that the CPU gives off to cool it down.

Anatomy of a Computer Tower

Hard DriveHard drives are sometimes called HD or HDD. The hard drive of a computer is the long-term memory of the computer. Everything you save on a computer goes into the hard drive. The hard drive can work together with the RAM by copying its files onto the RAM so that the RAM can access data easier. The faster the hard drive, the faster your computer can start up and load programs.


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