Electrical and Computer Engineering 2277A/B Lecture Notes - Lecture 20: Electronic Symbol, Canonical Normal Form, Multiplexer

• School: Western University
• Department: Electrical and Computer Engineering
• Course: Electrical and Computer Engineering 2277A/B
• Professor: Duane Jacques

Document Summary

Multiplexers provide another efficient (for the designer) means of implementing sum-of-products functions. Input data signal from one of input lines selected by -bit code is connected to an output line, where. For minterms producing = 1, hardwire corresponding data lines to logic 1. For minterms producing = 0, hardwire corresponding data lines to logic 0. Connect input variables of to the select code inputs of the mux. More efficient approach uses 2n-1-to-1-line mux to implement function of variable. Example: implement using a 4-to-1-line mux with and as the select bits. You may be asked to use specific bits as the mux select inputs. One at a time, substitute the possible values of the select bits into minimized expression to determine what to connect to the mux data inputs. Combinational circuits page 1 connect to the mux data inputs. Connect each data input to the corresponding simplified expression for its value of select bits.