automation computer copy copyspace desktop document electronics equipment isolated it laser office paper print printer printing space technology buttons controller device directional gaming grean hand held music old fashioned plastic play remote teal wireless green yellow black blue electronic flat Flatscreen lcd led modern monitor panoramic screen set television tv tv set view console control game gamer hobby home leisure machine object obsession playing airplane aviation colorful colourful diesel energy engine jumo junkers metal motor old plane power technics technique icon measuring metering O-scope oscilloscope pictogram scope sign sine wave sinusoid symbol test