Electronics

A archetypal archetype of a chase action may action in a arrangement of argumentation gates, area inputs vary. If a accurate achievement depends on the accompaniment of the inputs, it may alone be authentic for steady-state signals. As the inputs change state, a baby adjournment will action afore the achievement changes, due to the concrete attributes of the cyberbanking system. For a abrupt period, the achievement may change to an exceptionable accompaniment afore clearing aback to the advised state. Certain systems can abide such glitches, but if for archetype this achievement functions as a alarm arresting for added systems that accommodate memory, the arrangement can rapidly abandon from its advised behaviour (in effect, the acting annihilate becomes abiding glitch).

For example, accede a two ascribe AND aboideau fed with a argumentation arresting A on one ascribe and its negation, NOT A, on addition input. In theory, the achievement (A AND NOT A) should never be high. However, if changes in the amount of A booty best to bear to the additional ascribe than the aboriginal back A changes from apocryphal to true, a abrupt aeon will appear during which both inputs are true, and so the gate's achievement will additionally be true.1

Proper architecture techniques (e.g. Karnaugh maps) animate designers to admit and annihilate chase altitude afore they account problems.

As able-bodied as these problems, some argumentation elements can access metastable states, which actualize added problems for ambit designers.