Two Line Intercom
Basic Level Skills: Not specified Wed Aug 08 2007, 02:52 am
- Author
- Binu
- Author email
- [email protected]
- Author website
- www.binu.somee.com
Description
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.
Filesize
20.36 kB
Downloads
19222
Rating Not rated
Not rated
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