Editing Multiplexer (section)

==Multiplexers as PLDs==
Multiplexers can also be used as [[programmable logic device]]s, to implement Boolean functions. Any Boolean function of ''n'' variables and one result can be implemented with a multiplexer with ''n'' selector inputs. The variables are connected to the selector inputs, and the function result, 0 or 1, for each possible combination of selector inputs is connected to the corresponding data input. If one of the variables (for example, ''D'') is also available inverted, a multiplexer with ''n''−1 selector inputs is sufficient; the data inputs are connected to 0, 1, ''D'', or ~''D'', according to the desired output for each combination of the selector inputs.<ref>{{cite book| title=The TTL Cookbook| first=Donald E. |last=Lancaster| publisher=H.W. Sams | date=1974 | pages=140–3 |isbn=9780672210358}}</ref>