| 智能电话计时器的设计原理 |
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| 引用本文： | 张婵爱. 智能电话计时器的设计原理[J]. 机械管理开发, 2006, 0(5): 69-70 |
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| 作者姓名： | 张婵爱 |
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| 作者单位： | 太原理工大学科技处,山西,太原,030024 |
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| 摘 要： | 介绍了一种智能电话计时器的设计与实现。该计时器以单片机AT89S51为主控芯片．通过接收电话信号音识别电路CR6230，识别出的各种电话信号音和MT8870的解码信息，以达到对用户每个主叫电话信息记录的目的；并带有人机交互的显示屏和控制键盘，以便用户查询主叫信息。
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| 关 键 词： | 单片机 12C协议 串行通信 |
| 文章编号： | 1003-773X（2006）05-0069-02 |
| 收稿时间： | 2006-06-13 |
| 修稿时间： | 2006-06-13 |
Design Principle of the Smart Phone Time-recorder |
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| Zhang Chanai. Design Principle of the Smart Phone Time-recorder[J]. Mechanical Management and Development, 2006, 0(5): 69-70 |
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| Authors: | Zhang Chanai |
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| Affiliation: | Zhang Chanai |
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| Abstract: | The research and realization of a kind of samrt phone time-recorder are introduced,whose top management chip,one-chip computer AT89S51,can distinguish the different signal sound of the telephone and the decode message of MT8870 through CR6230 distinguishing circuit for received phone signal and sound to achieve the purpose of writing down call message for human-computer interaction controlled by keyboard for users' information inquiry. |
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| Keywords: | DTMF |
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