IEC 60050 - International Electrotechnical Vocabulary

IEVref:

351-52-04

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Status: Standard

Term:

sequential circuit

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Definition:

switching system the values of the output variables of which at a specified instant depend on the values of the input variables and the values of the state variables at this instant, whereas the values of the state variables of the system at a following instant depend on the values of the state variables and the values of the input variables at the specified instant

SEE: Figure 22.

Note 1 to entry: A sequential circuit is described by the equations

x_i+1 = f(x_i, u_i) transition function, consisting of a finite number of state variables

v_i = g(x_i, u_i) output function

where

x_i is the state vector at instant t_i;

x_i+1 is the state vector at instant t_i+1;

u_i is the input vector at instant t_i;

v_i is the output vector at instant t_i.

Note 2 to entry: For the sequential circuit a specific stability does exist. This stability means the property that the input variable which has caused the transition to a specific state cannot interact with this state or cannot cause another transition when interacting with this state.

Note 3 to entry: This entry was numbered 351-29-05 in IEC 60050-351:2006.

Publication date:

2013-11

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Internal notes:

2017-08-28: Added two missing </td> tags. LMO

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