Virtual Simulation Study of the Digital Logic Selector Based on NI Multisim 10.1

The digital logic selector of 74HC153 double four selected one has been simulated by the circuit software of NI Multisim 10.1. The values change of input pin and address code pin has been monitored by the indicator light of setting up simulation test circuit, observed output pin data selection of the 74HC153 digital logic selector. By the additional gate circuit, expansion port of the double four selected one digital logic selector as the third address code port, realized the function of selected one from eight. The simulation result is in accordance with theoretical arithmetic. Through actual example confirming, after reasonable utilization NI Multisim 10.1 in the experiment teaching of practice electronic circuit, the software can make abstract theoretical teaching become much concrete and vivid. At the same time, it is helpful to cultivate students‘ literacy of skills and to enhance teaching effect of the digital circuit course.