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來電顯示電路問題
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新會員
 
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請問一下我看了市面上很多來電顯示都是利用8051相關ic配合
cm8700 or ht9170來實現 想請問一下 有不需要透過8051來實現的方法嗎 我自己研究(尚未實做) dtmf--->8700--->74165 or 74166 (piso)---->ttl訊號 在將ttl訊號轉成rs232 不知這樣可行性? 可以請高手指點一下嗎
發表於: 2007/1/24 11:50
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