逆计时数显定时器的设计.rar
逆计时数显定时器的设计,1万字28页[摘要] 本文介绍了一种电子定时器．定时时间用数字显示．并进行逆计数．当计数器显示为 “ 0 ” 时．控制器会自动切断或打开用电器的电源， 定时时间范围 1～ 990分钟。该定时器可替代目前一些家用电器中的机械定时器。倒计时时定时器的用途很广泛，它可以用作定时器，控制被定时的电器，实现...
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逆计时数显定时器的设计
1万字 28页
[摘要] 本文介绍了一种电子定时器．定时时间用数字显示．并进行逆计数．当计数器显示为 “ 0 ” 时．控制器会自动切断或打开用电器的电源， 定时时间范围 1～ 990分钟。该定时器可替代目前一些家用电器中的机械定时器。
倒计时时定时器的用途很广泛，它可以用作定时器，控制被定时的电器，实现定时开或者定时关，在定时的过程中，随时显示剩余时间， 它还可以用作倒计时计数器。由三位数码管直观显示倒计时计数状态。
关键词：电子定时器,数字显示,倒计时
[Abstract] This article introduced one kind of electronic timer. Fixed the time is demonstrated with the digit. And carried on ploting the number. When the counter is demonstrated “0”, The controller automatic turnoff or opens with power source of electric appliance,the range of fixed time is 1~ 990 minutes.This timer may substitute some mechanical timer of domestic electric appliances in the present.
The use of the count down timer is very widespread, it can be used as the timer,which controls the electric appliance what be fixed time, realizes fixed time opened or closed, in the process of fixed time, momentarily demonstrates the surplus time, it can be also used as the countdown counter. Display the condition of the countdown immediately by three nixietube.
Key word: electronic timer ,digit demonstration，countdown
参考文献
[3] 庚华光 《电子技术基础》 数字部分
[5] 梁德厚 《数字电子技术及应用》 机械工业出版社
1万字 28页
[摘要] 本文介绍了一种电子定时器．定时时间用数字显示．并进行逆计数．当计数器显示为 “ 0 ” 时．控制器会自动切断或打开用电器的电源， 定时时间范围 1～ 990分钟。该定时器可替代目前一些家用电器中的机械定时器。
倒计时时定时器的用途很广泛，它可以用作定时器，控制被定时的电器，实现定时开或者定时关，在定时的过程中，随时显示剩余时间， 它还可以用作倒计时计数器。由三位数码管直观显示倒计时计数状态。
关键词：电子定时器,数字显示,倒计时
[Abstract] This article introduced one kind of electronic timer. Fixed the time is demonstrated with the digit. And carried on ploting the number. When the counter is demonstrated “0”, The controller automatic turnoff or opens with power source of electric appliance,the range of fixed time is 1~ 990 minutes.This timer may substitute some mechanical timer of domestic electric appliances in the present.
The use of the count down timer is very widespread, it can be used as the timer,which controls the electric appliance what be fixed time, realizes fixed time opened or closed, in the process of fixed time, momentarily demonstrates the surplus time, it can be also used as the countdown counter. Display the condition of the countdown immediately by three nixietube.
Key word: electronic timer ,digit demonstration，countdown
参考文献
[3] 庚华光 《电子技术基础》 数字部分
[5] 梁德厚 《数字电子技术及应用》 机械工业出版社
