Dear Twitpic Community – thank you for all the m/s amplitude software systems pvt ltd photos you have taken over the years. We have now placed Twitpic in an archived state. Feedback exists between two parts when each affects the other. Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop.
Did not find what they wanted? Try here
The system can then be said to feed back into itself. Simple causal reasoning about a feedback system is difficult because the first system influences the second and second system influences the first, leading to a circular argument. This makes reasoning based upon cause and effect tricky, and it is necessary to analyze the system as a whole. Karl Johan Åström and Richard M. Self-regulating mechanisms have existed since antiquity, and the idea of feedback had started to enter economic theory in Britain by the eighteenth century, but it wasn’t at that time recognized as a universal abstraction and so didn’t have a name. Over the years there has been some dispute as to the best definition of feedback. He emphasizes that the information by itself is not feedback unless translated into action.
There are two types of feedback: positive feedback and negative feedback. As an example of negative feedback, the diagram might represent a cruise control system in a car, for example, that matches a target speed such as the speed limit. The terms “positive” and “negative” were first applied to feedback prior to WWII. The idea of positive feedback was already current in the 1920s with the introduction of the regenerative circuit.