This project is a dialer box that connects to the phone and can be used to store and dial phone numbers, pins, and credit card numbers. The project uses PIC 16F690 microcontroller and a NTE1690 DTMF dialer chip.
Because this is an IP phone and I cannot just send the DTMF tones over the line, [...]
Power Engineering International is the leading magazine for the global electric power generation and transmission industry. It provides articles on new technologies and installations and analysis. Subscribe Power Engineering Magazine for free - limited.
EDN magazine provides how-to solutions for design engineers in the electronics industry. Engineers turn to EDN because they know they will always find valuable design techniques that they can use to do their jobs faster. Subscribe EDN Magazine for free
Oracle Magazine contains technology strategy articles, sample code, tips, Oracle and partner news, how to articles for developers and DBAs, and more. Oracle (NASDAQ: ORCL) is the world's largest enterprise software company. Get it For free
