Improved Design for Circuit of 16-route Answering Machine
Liu Wen-wu · Mianyang Shifan Xueyuan xuebao · 2011
To the deficiency of Li Yan's design of Multi-route Answering Machine based on 74LS-series IC,this paper brings forward three schemes of improved design for circuit of 16-route answering machine.The number of the first player can be orderly displayed from 1 to 16 correctly.Finally,the circuits have been tested in the environment of Multisim 11,and the experimental results prove that these schemes are correct and feasible.