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When we usually walk across the pebbles on the beach or riverside,
everyone traces back in memory; they had a good time building a stone tower at one time.
By Adopting these acts to Radio, the manipulation of some digital product is not learned ,
but they can control the product by natural act.
There are one radio and the electronic scales which can control the volume and the channel
in the body of a radio.
Putting the stone on the body of the radio,
the electronic scales sense the weight and send the sign.
Ant then the channel and the volume which save in advance come out.
Gyeongbuk, South Korea
Prof. Kim, Si Man
Industrial Dept. Daegu University
Jo, Cheol Ki
Gyeongbuk, Gyeongsan-si, South Korea
Jo Cheol Ki