### system:

Computer system
* All computer systems have a fixed number of maximum colors that they can display.
* Many computer systems use software that tracks dates with only the last two numbers of the year.
* Most computer systems claim the ability to evolve
  - depend upon magnetic disks for their chief source of online secondary storage
  - feature some kind of user identification, at least as part of authorization
* Most computer systems have only one parallel port
  - two or more memory banks - usually called bank A, bank B, and so on
  - support floating point in hardware today
* Some computer systems come with a printer.
* Some computer systems have more than one mechansim for obtaining data
  - problems with their keyboard layout while the chat software is running
  - public file archives
  - require that an individual be a registered user and have a password
* acting as sounding boards serve as design tools for thinking.
* allow newspapers to cut their rising costs for labor and energy.
* are just tools that do their jobs best when they re seen least
  - like automobiles
  - ubiquitous at military offices and work sites
* can play a critical role even in the leanest of environments
  - use their memory for whatever needs arise
* demand resources of many kinds, and have insatiable appetites for money.
* executing large programs control robots, cars, airplanes and industrial plants.
* represent a culture.
* use different methods for mounting hard drives
  - explanations to justify their conclusions

Computerized system
* let planners map land areas and make overlay maps.
* support almost all functions of a business, including overhead functions.

### system:

Conjugated system
* are created by several multiple bonds , each separated by single bonds
  - the main things that make up chromophores
* have special properties that give their compounds strong colors
  * In chemistry, a 'conjugated system' system of connected p-orbitals with delocalized electrons. Conjugated systems are created by several multiple bonds, each separated by single bonds. In general, conjugated systems may lower the overall energy of the molecule and increase how steady it is. They can contain lone pairs, radicals or carbenium ions. The compound may be cyclic, acyclic, linear or mixed. Molecules which have a conjugated system have special properties created by the greater sharing of the delocalized electrons among many atoms
+ Conjugated system, Conjugated systems in pigments, Chromophores
  * Conjugated systems are the main things that make up chromophores. Chromophores are light-absorbing parts of a molecule that can cause a compound to have a visible color. Chromophores are often present in various organic compounds and sometimes present in polymers that are colored or glow in the dark. Many times, chromophores have aromatic rings
  - pigments: Organic chemistry
  * Conjugated systems have special properties that give their compounds strong colors. Many pigments have conjugated systems. For example, beta-carotene has a strong orange color. This comes from its long conjugated hydrocarbon chain. When an electron in beta-carotene's conjugated system absorbs a photon of light of the right wavelength, the electron can be promoted to a higher energy level. Often an HOMO to LUMO change is made by an electron if it is allowed by the selection rules for electromagnetic transitions

Control system
* Most control systems require motors to be fitted with encoders in order to sense position.
* are systems
  - what make machines, in the broadest sense of the term, function as intended
* means a collection of restrictions that effectively functions as a single control.
* play a critical role in spaceflight.
* prevent cells from achieving unrestrained growth.
* promote moderation in consumption.
* regulate heat, light and humidity for day and nighttime patterns.