Changes

==Architecture==

==Architecture==

All digital computer systems, regardless of classification or usage, consist of the following components:

All digital computer systems, regardless of classification or usage, consist of the following components:

* <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, such as [[floating point]] processors (now usually included as part of the CPU), and array processors (in mainframes and [[supercomputer]]s).

* <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.

Most modern computer systems also have peripheral devices:

Most modern computer systems also have peripheral devices:

* <b>Storage.</b>  Large amounts of lower-speed, less-expensive hardware where data can be stored for later retrieval.  Storage can be local or it can be remotely accessed via a network.  The most typical form of local storage are hard disks, SSDs, thumb drives, and DVDROMs.  Older mass storage devices include punch cards, paper tapes, magnetic tapes, and CDROMs.

* <b>Storage.</b>  Large amounts of lower-speed, less-expensive hardware where data can be stored for later retrieval.  Storage can be local or it can be remotely accessed via a network.  The most typical form of local storage are hard disks, SSDs, thumb drives, and DVDROMs.  Older mass storage devices include punch cards, paper tapes, magnetic tapes, and CDROMs.

* <b>Other I/O devices.</b> Any number of optional peripheral devices are available for computers, including [[Computer mouse|mice]], scanners, card readers, [[terminals]], and [[printers]].

* <b>Other I/O devices.</b> Any number of optional peripheral devices are available for computers, including [[Computer mouse|mice]], scanners, card readers, [[network]] interfaces, [[terminals]], and [[printers]].

==Binary and ternary==

==Binary and ternary==