A friendship relation invented Barcode do you know this?

BARCODE INVENTION

Root:

The development of barcode rooted from comments by a food chain president to a university dean at the Drexel Institute of Technology, Philadelphia. The company wanted some sort of system to collect the product information at the checkout automatically and this issue was overhead by Bernard Silver a graduate student. Then Silver and his friend Norman Woodland decided to pursue a solution.

Adoption:

The pair turned a combination of movie sound track technology invented by Lee De Forest in the 1920s and Morse code dots and dashes.

These two just extended the dots and dashes downward and made narrow lines and wide lines out of the Morse code and this statement gave by Woodland.

Pattern of working:

De Forest’s film included a varying transparency pattern on its edge. When a light shined through it, sensing equipment on other side translates the change of brightness into electronic waveform that turned into sound signals. Woodland adopted this system reflecting light of his wide and narrow lines and coupling the sensor to oscilloscope. Finally they invented the first electronic reader of printed data.

a)linear barcode

b)2D barcode

Source:

1001 INVENTIONS THAT CHANGED THE WORLD-Preface by Trevor Baylis and General Editor Jack Challoner.

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