Changes

* <b>Processing.</b>  Provided by one or more [[Central processing unit|CPU]]s, sometimes with ancillary processors.

* <b>Processing.</b>  Provided by one or more [[Central processing unit|CPU]]s, sometimes with ancillary processors.

* <b>Memory.</b>  High-speed local storage, such as [[Random-access memory]]

* <b>Memory.</b>  High-speed local storage, such as [[Random-access memory]]

* <b>Software.</b>  Each unique computer hardware environment needs software that works with the model of processor used in that computer.

* <b>Software.</b>  Each unique computer hardware environment needs [[software]] that works with the model of processor used in that computer.

* <b>Input/Output.</b>  Computers are only useful if they can generate output.  Output can vary from control lines for engine components to characters on a video screen.  Input also varies in form, but most computers need input to process, which then drives the output.

* <b>Input/Output.</b>  Computers are only useful if they can generate output.  Output can vary from control lines for engine components to characters on a video screen.  Input also varies in form, but most computers need input to process, which then drives the output.