8 line telephone exchange using pic 16f877

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shafii

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hi to all,i m new here. i am working on my final year project "8 line telephone exchange" using pic 16f877a. and i want to make programmmer by myself. does any body hv schemetic of pic16f877 programmer?? and if anybody hv info abt 8 line PABX den plz share...
i wil be very much thankful.
regards
shafii
 

Here is the thread link for a 8 line PBX published in Elector. The copy is not so good. But may help you get some idea.


And here are the links for building your own PIC programmer


**broken link removed**



Hope these will help you. Please Thank by the "Helped me" Button
Cheers
 

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    shafii

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I design 8 line exchange with AT89c51, i think u can get help if you study that circuit

**broken link removed**

~ Ashad Mustufa
 

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    shafii

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