FEEDBACK
\fˈiːdbak], \fˈiːdbak], \f_ˈiː_d_b_a_k]\
Sort: Oldest first
-
A mechanism of communication within a system in that the input signal generates an output response which returns to influence the continued activity or productivity of that system.
By DataStellar Co., Ltd
-
How an output is retruned to the next step. It helps regulate machines and is part of all interactions no matter how much. It involves the reaction to the stimulus. Refer to homeostasis.
By Henry Campbell Black
-
Part of a system output presented at its input.Feedback may be unintended. When used as a design feature,the output is usually transformed by passive components whichattenuate it in some manner; the result is then presented atthe system input.Feedback is positive or negative, depending on the sign withwhich a positive change in the original input reappears aftertransformation. Negative feedback was invented by Black tostabilise vacuum tube amplifiers. The behaviour becomeslargely a function of the feedback transformation and onlyminimally a function of factors such as transistor gain whichare imperfectly known.Positive feedback can lead to instability; it finds wideapplication in the construction of oscillators.Feedback can be used to control a system, as in feedbackcontrol.
By Denis Howe
Word of the day
Sheridan, Philip Henry
- (March 6, 1831-August 5, 1888), one of the great Unionist generals war, was born at Albany, and graduated West Point in 1853. first stages Civil War he quartermaster, but 1862 received a cavalry command. battle Perryville led division, on bloody field Murfreesboro especially distinguished himself. Appointed major-general volunteers, fought Chickamauga, Missionary Ridge shared with Hooker others honors day. period his career now approaching. Grant gave him, 1864, charge corps Army Potomac; present Wilderness, Todd's Tavern, conducted an extended raid May June, August placed Shenandoah. defeated Early Winchester Fisher's Hill, absent Winchester, when, October 19, enemy made sudden attack Cedar Creek. "Little Phil's" ride from "twenty miles away," to battle-field, reforming turning defeat into brilliant victory, is theme story poetry. regular army. operations 1865 took leading part, won Five Forks, April 1, helped materially denouement Appomattox. 1869 promoted be lieutenant-general 1888 general. 1883 succeeded