周杰伦 哎呦不错:电话机来电显示电路 原理
来源:百度文库 编辑:高校问答 时间:2024/04/26 21:26:49
我想自制一个来电显示的固定电话机,但不知线路中传的是什么信号,电话机又是如何识别的呢?
最好有图纸资料或原理文章,小弟先谢谢了!
http://www.linkkey.com/title/read.asp?TitleID=132
http://www.001sch.com/bbs/dispbbs.asp?boardid=47&ID=576&replyID=724&skin=1
http://61.189.243.250/jslw/swphs/sw/52.%20%C0%B4%B5%E7%CF%D4%CA%BE%B5%C4%BB%F9%B1%BE%D4%AD%C0%ED%BA%CD%D2%BB%B0%E3%D5%CF%B0%AD%B4%A6%C0%ED.htm
http://www.mcubar.com/mcu/callmessage.htm
最好有图纸资料或原理文章,小弟先谢谢了!
http://www.linkkey.com/title/read.asp?TitleID=132
http://www.001sch.com/bbs/dispbbs.asp?boardid=47&ID=576&replyID=724&skin=1
http://61.189.243.250/jslw/swphs/sw/52.%20%C0%B4%B5%E7%CF%D4%CA%BE%B5%C4%BB%F9%B1%BE%D4%AD%C0%ED%BA%CD%D2%BB%B0%E3%D5%CF%B0%AD%B4%A6%C0%ED.htm
http://www.mcubar.com/mcu/callmessage.htm