文件名称:2-LINE-Intercom
- 所属分类：
- 其他嵌入式/单片机内容
- 资源属性：
- 上传时间：
- 2012-11-26
- 文件大小：
- 46kb
- 下载次数：
- 0次
- 提 供 者：
- B***
- 相关连接：
- 无
- 下载说明：
- 别用迅雷下载，失败请重下，重下不扣分！
介绍说明－－下载内容均来自于网络，请自行研究使用
This project is used as an electronic private exchange. It has two telephones, which have the intercom facility, and they can be connected to the telephone line. All the functions are controlled by the 8-bit microcontroller AT89C2051 which has an Program Memory (ROM) of 2 kilobytes.
The DTMF (Dual tone multiple frequency) signals are decoded by the DTMF decoder IC 8870 and its output will be in decimal of the pressed key. The switching functiond are done by 12v relays.
The DTMF (Dual tone multiple frequency) signals are decoded by the DTMF decoder IC 8870 and its output will be in decimal of the pressed key. The switching functiond are done by 12v relays.
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下载文件列表
Intercom.a51
intercom.GIF
intercom.TIF
intercom.GIF
intercom.TIF