主持人预置每组100分，主持人按准备按钮，宣布准备抢答并述题。判断有无违规抢答者，如果有违规提前抢答者(选手抢答台红灯亮并发出声音)，则宣布本题失败并做违章处理(减分或警告)，然后返回前一步；如果没有违章提前抢答者，则主持人按开始抢答按钮，宣布开始抢答。选手按自己对应的抢答按钮，成功抢答的选手所对应的绿灯亮并发出声音。若选手答对问题，则主持人给其加10分，否则减10分。之后进行下一题或宣布抢答结束。
The moderator presets 100 points for each group. The moderator presses the prepare button to announce that he is ready to answer and describe the topic. Determine if there is a violation answerer, if there is a violation answerer ahead of time (the red light on the contestant answering desk lights up and emits a sound), then declare the failure of this question and do violation handling (point reduction or warning), then return to the previous step; Otherwise, the host presses the start answering button to announce the start of answering. The contestant presses his corresponding answer button, and the green light corresponding to the successful contestant lights up and makes a sound. If the player answers the question correctly, the host will add 10 points to it, otherwise 10 points will be deducted. Then proceed to the next question or announce the end of the rush response. (2020-04-20, Multisim, 982KB, 下载0次)
该文件为采用UC3842设计的反激式开关电源的multium仿真，输入为220V交流电压输出为12V直流
This document is the multium simulation of flyback switching power supply designed by UC3842. The input is 220V AC and the output is 12V DC (2020-04-13, Multisim, 2030KB, 下载11次)
（1）主要任务是产生一个开锁信号，而开锁信号的形成条件是输入代码和已设置的密码相同。实现这种功能的电路构思有多种。比如：用2片8位数据锁存器或2片4位寄存器，一片存入开锁的代码，另一片存入密码，通过比较的方法判断，若二者相等，则形成开锁信号。
（2）在产生开锁信号后，要求输出声、光信号。其中音响的产生可以由开锁信号去触发一个音响电路。其中的光信号可以用开锁信号点亮LED指示灯。
（3）用按钮开关的第一个动作信号触发一个5S的定时器，若在5S内未将锁打开，则电路进入自锁状态，使之无法再打开，并由扬声器发出持续10秒的报警信号。
(1) The main task is to generate a unlocking signal, and the formation condition of unlocking signal is that the input code and the set password are the same. There are many circuit ideas to realize this function. For example, if two 8-bit data latches or two 4-bit registers are used, one will store the unlocking code and the other will store the password. If they are equal, the unlocking signal will be formed.
(2) After the unlocking signal is generated, it is required to output acoustic and optical signals. The generation of sound can trigger a sound circuit by unlocking signal. The light signal can be used to turn on the LED indicator with the unlocking signal.
(3) Use the first action signal of the button switch to trigger a 5S timer. If the lock is not opened within 5S, the circuit will enter the self-locking state, so that it cannot be opened again, and the speaker will send an alarm signal lasting for 10 seconds. (2020-03-15, Multisim, 369KB, 下载7次)
ELECT 按鈕:
在指標所在的地方,按了 SELECT 按鈕,即是啟動操作、功能、或子功能、或
輸入狀態
NEXT 按鈕:
按了 NEXT 按鈕,表示你已認知目前機器的提示或狀態
EXIT 按鈕:
按了 EXIT 按鈕,表示離開目前的狀態
上述使用方法,在螢幕右下方的對話框
lect button:
Where the indicator is located, press the select button, i.e. start operation, function, or sub function, or
Input state
NEXT button:
Press the next button to indicate that you have recognized the prompt or status of the current machine
EXIT button:
Press the exit button to leave the current status
Use the above method in the dialog box at the bottom right of the scree (2020-01-01, Multisim, 169KB, 下载0次)
一个声光控开光控制器，具体要求如下：
（1）白天对声音不敏感，不需要发光；
（2）夜晚拾音器检测声音发光；
（3）控制发光时间在5秒后自动熄灭；
（4）设计一组二极管光照电路(用Multisim14.0仿真)
An acoustooptic control and light switching controller, the specific requirements are as follows:
(1) it is not sensitive to sound during the day and does not need to emit light;
(2) sound emission detection by night pickup;
(3) control the luminous time to be automatically extinguished after 5 seconds;
(4) design a set of diode lighting circuit (simulation with Multisim14.0) (2018-12-13, Multisim, 223KB, 下载5次)