There were several popular electronics in 2012. Some of these
electronics include the Samsung Galaxy Note 10.1, the Nikon Coolpix
S800c, and the Apple iPhone 5.
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E. Sedov has written:
'Entertaining electronics' -- subject(s): Electronics, Popular
works
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I think you are thinking of the Radio Electronics magazine
Mark-8 build it yourself computer. Popular Electronics didn't show
anything until 1974: that was the MITS Altair 8800 kit
computer.