电子秒表设计与分析  

作　　者：田芳明 王福鹏 

机构地区：[1]黑龙江八一农垦大学电气与信息学院,黑龙江大庆163711

出　　处：《科技创新与应用》2018年第5期93-94,共2页Technology Innovation and Application

摘　　要：以NE555芯片为核心,组成多谐振荡器,与CD4062十进制译码器组成计数电路。CD4026输出端信号具有规律可循,经反馈后获得进位脉冲信号和清零信号,可实现秒表计数功能。并选取电阻,电容,数码管,设计出4位十进制LED数码管显示时间,显示范围从00.00~到99.99s。计时开始,计时停止和显示回0功能由开关控制。With NE555 chip as the core, a multi-hannonic oscillator is fonned, which is combined with CD4062 decimal de-coder to constitute a counting circuit. The output signal of CD4026 has regular rules. After feedback, the carry pulse signal and zero clearing signal can be obtained, and the stopwatch counting function can be realized. Selecting the resistance, capacitance, and digi-tal tube, this paper designs 4 decimal LED digital tubes to display time, within a range from 00.00？ 99.99s. The functions of dis-playing timing starts, timing stop and back to 0 are controlled by the switch.

关 键 词：NE555芯片 CD4062十进制译码器 LED数码管 制造工艺 

分 类 号：TH714[机械工程—测试计量技术及仪器]