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  2. State variable - Wikipedia

    en.wikipedia.org/wiki/State_variable

    The state vector (vector of state variables) representing the current state of a discrete-time system (i.e. digital system) is [], where n is the discrete point in time at which the system is being evaluated. The discrete-time state equations are

  3. State (computer science) - Wikipedia

    en.wikipedia.org/wiki/State_(computer_science)

    In information technology and computer science, a system is described as stateful if it is designed to remember preceding events or user interactions; [1] the remembered information is called the state of the system. The set of states a system can occupy is known as its state space. In a discrete system, the state space is countable and often ...

  4. Finite-state machine - Wikipedia

    en.wikipedia.org/wiki/Finite-state_machine

    Each state of an acceptor is either accepting or non accepting. Once all input has been received, if the current state is an accepting state, the input is accepted; otherwise it is rejected. As a rule, input is a sequence of symbols (characters); actions are not used. The start state can also be an accepting state, in which case the acceptor ...

  5. State diagram - Wikipedia

    en.wikipedia.org/wiki/State_diagram

    A state diagram for a door that can only be opened and closed. A state diagram is used in computer science and related fields to describe the behavior of systems. State diagrams require that the system is composed of a finite number of states. Sometimes, this is indeed the case, while at other times this is a reasonable abstraction.

  6. State of matter - Wikipedia

    en.wikipedia.org/wiki/State_of_matter

    A quantum Hall state gives rise to quantized Hall voltage measured in the direction perpendicular to the current flow. A quantum spin Hall state is a theoretical phase that may pave the way for the development of electronic devices that dissipate less energy and generate less heat. This is a derivation of the Quantum Hall state of matter.

  7. Steady state - Wikipedia

    en.wikipedia.org/wiki/Steady_state

    Steady state is also used as an approximation in systems with on-going transient signals, such as audio systems, to allow simplified analysis of first order performance. Sinusoidal Steady State Analysis is a method for analyzing alternating current circuits using the same techniques as for solving DC circuits. [1]

  8. Electric current - Wikipedia

    en.wikipedia.org/wiki/Electric_current

    In other media, any stream of charged objects (ions, for example) may constitute an electric current. To provide a definition of current independent of the type of charge carriers, conventional current is defined as moving in the same direction as the positive charge flow. So, in metals where the charge carriers (electrons) are negative ...

  9. Status quo - Wikipedia

    en.wikipedia.org/wiki/Status_quo

    Status quo is a Latin phrase meaning the existing state of affairs, particularly with regard to social, economic, legal, environmental, political, religious, scientific or military issues. [1] In the sociological sense, the status quo refers to the current state of social structure or values. [2]