Card reader (SD/SDHC, CF, etc.): Your computer uses these to read from portable storage like SD cards.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.It consists of a device for input, processing, storage, output and.

They are: Hardware Software Peopleware Hardware component: The computer hardware could be defined as the physical parts of the computer that we see, feel and handle.