MOSCOW - APRIL 19: Digital oscillograph and signal generator at the international exhibition of  electronic industry ExpoElectronica, ElectronTechExpo, LEDTechExpo on April 19, 2011 in Moscow
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MOSCOW - APRIL 19: Digital oscillograph and signal generator at the international exhibition of electronic industry ExpoElectronica, ElectronTechExpo, LEDTechExpo on April 19, 2011 in Moscow