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DTMF BASED DEVICE CONTROLLING SYSTEM


Posted by: smart paper boy
Created at: Saturday 18th of June 2011 06:18:07 AM
Last Edited Or Replied at :Thursday 26th of January 2012 10:08:41 PM
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ly eliminated. The industrial appliances can be switched on/off using DTMF TECHNOLOGY.
The main function of the system is to control any electrical devices through mobile phone. In this concept two mobile phones with different service numbers are used, the control phone at receiving end, where the appliances are controlled is interfaced with microcontroller unit which controls the devices through relays.
To achieve this, the output of the mobile is amplified and fed to DTMF (Duel Tone Multi Frequency) decoder chip, which generates binary code according to the received information from the o..................[:=> Show Contents <=:]



DTMF BASED DEVICE CONTROLLING SYSTEM


Posted by: smart paper boy
Created at: Saturday 18th of June 2011 06:18:07 AM
Last Edited Or Replied at :Thursday 26th of January 2012 10:08:41 PM
mobile phone dtmf controlled electrical device switching existing system , dtmf based electrical device switching, dtmf based project , dtmf based device switching, dtmf used for controlling devices , seminar on dtmf technology, device control using mobile phone using dtmf technology , device control using dtmfcode, dtmf device control in electronics microcontroller , electronics devices using dtmf, dtmf based device control , dtmf based projects, sample program in keil c action of dtmf decoder , device control through mobile useing dtmf, seminar on mobile controlling devices , project on dtmf control of devices, dtms based project , dtmf devices, dtmf baseb ,
devices through relays.
To achieve this, the output of the mobile is amplified and fed to DTMF (Duel Tone Multi Frequency) decoder chip, which generates binary code according to the received information from the other mobile phone. After establishing a communication link between the two mobiles by dialing the home mobile number, the corresponding keys of calling phone must be activated to generate different DTMF signals. Based on this signals, the DTMF decoder generates different binary codes through four outputs, and this data is Fed to the microcontroller. Now the program is prepared for ..................[:=> Show Contents <=:]



DTMF Based Device Control


Posted by: seminar class
Created at: Monday 11th of April 2011 06:02:50 AM
Last Edited Or Replied at :Monday 29th of October 2012 03:31:26 AM
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ut of the registers and the ALU and it synchronizes the execution of instructions (we will deal with instruction execution at a later date).
1.4 Micro Controller (┬Ác):
A microcontroller is a small computer on a single integrated circuit containing a processor core, memory, and programmable input/output peripherals. Program memory in the form of NOR flash or OTP ROM is also often included on chip, as well as a typically small amount of RAM. Microcontrollers are designed for embedded applications, in contrast to the microprocessors used in personal computers or other general purpose..................[:=> Show Contents <=:]



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