![]() Such damage can be very destructive a sudden high power surge can short-circuit the electronic components of your computer and render it useless. Card reader (SD/SDHC, CF, etc.): Your computer uses these to read from portable storage like SD cards. Application software Microsoft Windows Mac OS X Unix Linux Google Chrome OS. ![]() Optical disk drive (e.g., BD/DVD/CD drive): This feature is less common in newer computers, but they provide a place to enter a music, movie, or data disk for your computer to read.They're faster, quieter, and more expensive than HDDs, though both do the same job. Solid-State Drive (SSD): Newer SSDs store information on chips.Hard Disk Drive (HDD): An HDD is an older version of the hard drive it stores information like apps and documents on a physical disc that your computer reads with an arm that travels across it (similarly to a record player).Video card: This component handles drawing graphics in games and displaying videos.It's usually a cord that plugs into the wall and a "power brick." Power Supply Unit (PSU): The PSU is the means through which your computer draws power.Your computer spends RAM to run those programs and process information. Random Access Memory (RAM): RAM is the memory your computer uses to work it's different from the storage that holds your files and programs.Central Processing Unit (CPU): The CPU interprets and executes most of your computer's commands.Motherboard: The motherboard (also known as a logic board in other devices) coordinates all of the other hardware.
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