Computer Storage

  • It took 51 years before hard disk drives reached the size of 1 TB
  • Computer data storage, often called storage or memory, is a technology consisting of computer components and recording meida used to retain digital data
  • Alternatively referred to as storage, storage media, or storage medium, a storage device is a hardware device capable of holding information. There are two storage devices used in computers; a Primary storage device such as computer RAM and a secondary storage device such as a computer hard drive. The secondary storage could be a removable, internal, or external storage. In the picture to the right, is an example of a Drobo, an external secondary storage device.

Long Term & Temporary storage

Your computer needs storage because the processor needs a place to perform its magic — a scratchpad for mad doodles, if you will. All computers need storage. On a modern computer, storage comes in two forms: temporary and long-term:

  • Temporary storage: Supplied as memory, or RAM. Memory is where the processor does its work, where programs run, and where information is stored while it’s being worked on.

  • RAM is the microprocessor’s playground, its workshop, its den

  • Long-term storage: Provided by storage media. Storage media includes disk drives, flashdrives, media cards, and CDs and DVDs. Long-term storage allows information to be saved and recalled for later use — like putting clothes in a closet or all your junk in a storage unit. Media storage is the place where things go when the microprocessor isn’t directly working on them — but from where stuff can be retrieved later, if need be.

More Than Just A Computer

It is not just computers which have hard drives & memory storages e.g. PS3, XBOX ONE,IPHONE,HUMAN MEMORY
Here is a PS4 Storage system which can hold up to 8GB,16GB & Sometime 100GB

Inputs & Outputs

  • 1. Any information or data that's entered or sent to the computer to be processed is considered input. Input or user input is most often sent to the computer using an input device such as a keyboard or mouse. In the picture to the bottom, is and example of input being sent from the computer keyboard to the computer.
  • In general, input can also refer to a contribution of feedback, information, or work. For example, someone may ask you for your input about a project they are doing at work or school.
  • Output is Any information that has been processed and comes from a computer or computer device is considered output. When someone is viewing output, they're seeing it on an output device such as a computer monitor or a hard copy print out. In the picture to the right, is an example of output being sent from the computer to a printer.


  • Commonly refers to a set of instructions currently being processed by the computer processor. For example, in Windows you can see each of the processes running by opening the Processes tab in Task Manager. Windows Processes are Windows services and background programs you normally don't see running on the computer. For example, a process may be a printer program that runs in the background and monitors the ink and other printer settings while the computer is running. LOOK BELOW FOR A PROCESSOR