%0 Journal Article
%T 基于Multisim软件答辩倒计时的设计仿真<br>Design and Simulation of Interview Defense Countdown Based on Multisim Software
%A 李洋洋
%A 李德伦
%A 华夏
%A 范为民
%A 马佳
%J Modeling and Simulation
%P 3118-3129
%@ 2324-870X
%D 2024
%I Hans Publishing
%R 10.12677/mos.2024.133285
%X 基于Multisim14软件，本文设计了毕业答辩倒计时提醒电路，实现了在8分钟时间内自动提醒演讲者剩余时间的功能。该电路能够满足答辩时间的精确控制，通过数码管显示剩余时间，并在答辩结束前1分钟或者其他时间和答辩时间结束时发出声音提醒。设计加入了可以在倒计时某个具体的位置进行暂停然后报警以及随时可以复原为初始显示数字的功能。并且可以手动通过拨动拨码器，调节所要倒计时的分钟数。此外显示译码器电路中加逻辑门与其相连，通过小灯和蜂鸣器实现倒计时一分钟与时间截止(00:00)的报警功能。<br />
Based on Multisim14 software, the countdown reminding circuit of graduation defense is designed, which realizes the function of automatically reminding the speaker of the remaining time within 8 minutes. The circuit can meet the precise control of the defense time, display the remaining time through the digital tube, and issue a sound reminder 1 minute before the end of the defense or another time and the end of the defense time. The design has added a function that can pause at a specific position in the countdown and then alarm and can be restored to the initial display number at any time. The number of minutes to be counted can be adjusted manually by flipping the dip switch. In addition, the display decoder circuit is connected to a logic gate, and the alarm function of counting down one minute and time cutoff (00:00) is realized through small lights and buzzers.
%K Multisim，仿真，倒计时计时器，报警器<br>Multisim
%K Simulation
%K Countdown Timer
%K Alarm
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=87937