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3,008 results
Barcodes In One Lesson. Barcodes have revolutionized modern life. Discover what happens every time you hear a beep at the ...
1,046,217 views
15 years ago
Barcoders Jamming! Barcoder: generates sounds by connecting scan-signals of a barcode scanner to a powered speaker directly ...
6,470,794 views
5 years ago
