DTMF BASED DEVICE CONTROLLING SYSTEM
ABSTRACT
In this competitive world human cannot spare his time to perform his daily activities manually without any fail. The most important thing he forgets to switch off the room lights wherever not required. With this, even the power will be wasted up to some extent. This project gives the best solution for electrical power wastage. Also the manual operation is completely eliminated. The industrial appliances can be switched on/off using DTMF TECHNOLOGY.
The main function of ....etc

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I don't know how to prepare the documentation at this particular topic...if it is possible send me the documentation. ....etc

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Hello sir,
I am in final year B.tech (electrical & electronics engg.). I would appreciate your help in my minor project. I need a report on Cellphone operated Robot based on DTMF technology.
thanks ....etc

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Hi,
My names is mcguire sanders and i need your help with a seminar report on lasers application in simple cd, dvd and more advance applications. ....etc

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hi.
i need a report and ppt as early as possible ....etc

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This project is used to control 3 servo motors and 2 DC motors on a mobile platform. It needs to be controll in two modes. One is using a mobile phone on the robot which receives commands through DTMF tones from another mobile phone. The second one is from a computer. here using the same DTMF tone decoding circuit to control using the computer. try to use serial port for send a byte to a micro controller. Then generate DTMF tone using DTMF encoder . Then transmit the tone wirelessly. then decode these received DTMF signal , fix some command ....etc

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INTRODUCTION


In the present world of wireless technology every thing is going to be digital and wireless, and the cell phone is the key player in wireless technology today.
And today technology made the possessing of a mobile, considered as a basic commodity.
And the trends in wireless technology changing day-by-day and today the working is going on how to develop remote devices with out the presence of man and to reduce to the time factor and labor, and our project be ....etc

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Abstract:
This project is about money transfer system for ATMs. i.e., account holder can enter the key(password) in his mobile. The controller on transmitter side will encode key to some some addres. On the other side, that is further decoded by DTMF decoder, then to Microcontroller. Microcontroller will decide how much money has to be drawn for that particular key, as according to the program written in it.
Note that,Secret Key (password) is known only to account holder.
This module is interfaced with ATM machine, so ....etc

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EMBEDDED SYSTEMS
1.1 Introduction:
An embedded system is a system which is going to do a predefined specified task is the embedded system and is even defined as combination of both software and hardware. A general-purpose definition of embedded systems is that they are devices used to control, monitor or assist the operation of equipment, machinery or plant. Embedded reflects the fact that they are an integral part of the system. At the other extreme a general-purpose computer may be used to control the operation ....etc

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1.advantages and disadvatages
2.applications (where it is uses)
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I'm waiting for your valuable information.

thanking u sir,

Your's Sincearly,
A.S.Hemalatha.[i ....etc

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