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86,254 results
Barcodes In One Lesson. Barcodes have revolutionized modern life. Discover what happens every time you hear a beep at the ...
1,000,291 views
13 years ago
Barcoders Jamming! Barcoder: generates sounds by connecting scan-signals of a barcode scanner to a powered speaker directly ...
5,998,152 views
4 years ago