Interesting project

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*Digital card lock* *CD Rom drive as Audio CD-Player* *heat detector* *AM radio transmitter* *15 step power supply* *Cordless Headphone* *FM transmitter.* *Blown fuse indicator* *Telephone Answering Machine* *Phone broadcaster*	*VHF Audio Video Transmitter* *Telecom headset* *Multipurpose circuit for telephone* *Teleremote control* *Clap switch* *Colour sensor* *Digital switching system* Magic light *Telephone conversation recorder* *Luggage Security system*