Selection of Median Value
Often times we will not want to select just the highest or lowest value from a set of inputs. Instead, we might want to the select the median value. A combination of high and low selectors can be used in this case in order to select this value. In order to do this, we will first need to compare each input signal to the others in a one-on-one fashion, using either all high selectors or all low selectors. The outputs from these selectors will then all be sent to one final selector, which will be of the opposite type than of the intial selector (i.e. a low selector will be used if the first filter of signals was done by a parallel arrangment of high selectors). An example of this application of override control can be seen below, in which we have 3 input signals and wish to select the median value.