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8051 microcontroller 8051 microcontroller
automatic answering machine

auto answering circuit
Forum -> Electronics
Circuit:


Circuit Description:
Here is a circuit of a simple telephone answering unit which may be used with any telephone. The circuit consists of three main sections:
1. Ring detector section.
2. A timer controlled electronic switch and telephone line interface.
3. A voice IC having a specific pre-recorded message.
This is not very critical and any other device (such as tape player with message recorde...[more]
answering machine circuit   automatic answering machine   electronic answering machine   
Posted by Ajay Bhargav on Monday 22 October 2007 - 04:18:18



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8051 Microcontroller Projects 8051 AVR tutorials PIC microcontroller, 8051 assembly language programming electronics and communication ECE CSE pdf ebooks library BE final year project ideas Embedded systems