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.

Comments

Some of the powers and functions of RDO

REVENUE DIVISIONAL OFFICER/SUB-COLLECTOR General supervision and inspections: 1. Exercise General Supervision and Control over Tahsildars, M.R.O.s Special Deputy Tahsildars and every special staff employed in the division and kept under his control. 2. Under take Annual Inspection of Taluk / Mandal Office in his Division. 3. Supervise and review fixing of kist / collection centers, collection of Land Revenue non-agricultural assessment, excise arrear loans and all other miscellaneous revenues. 4. Inspect offices of Mandal Praja Parishads. 5. Inspect SC / ST and BC’s housing colonies. 6. Inspect Social Welfare and Tribal Welfare Hostels. 7. Inspect Cinema Theatres including touring Talkies. 8. Conduct test check of community certificate / Nativity certificate / solvency Certificate / Legal Heir Certificates issued by the M.R.Os. 9. Inspect works relating to Natural Calamities viz., Floo

TOP 10 FAMOUS TEMPLES IN INDIA

TOP 10 FAMOUS TEMPLES 1. Khajuraho Temple in Madhya Pradesh : Khajuraho Temple in Madhya Pradesh - See more at: http://insightsindia.blogspot.in/2012/06/top-10-temples-in-india.html#sthash.BEW0f3Ro.dpuf 2. Somnath Temple in Gujarat: Somnath Temple in Gujarat Somnath temple has got the recognition of first jyotirlinga of Lord Shiva and adorns the vibrant state of Gujarat. The word ‘Somnath’ means Lord of the Moon - See more at: http://insightsindia.blogspot.in/2012/06/top-10-temples-in-india.html#sthash.BEW0f3Ro.dpuf 3. Kashi Vishwanath Temple in Varanasi, Uttar Pradesh: Kashi Vishwanath Temple in Varanasi Built by Ahilyabai Holkar in 1780, Kashi Vishwanath temple is one of the holiest and revered temples of Varanasi, dedica

A letter written by Lord Macaulay to the British Parliament on 2nd Feb 1835.

Lord Macaulay the British officer sent a letter to their British parliament on 2nd Feb 1835 on the customs,cultures and traditions of INDIA.He also written a sentence that "how Indians can change from their customs to our,how they change their culture to our culture and other traditions,if we do this we can see a truly dominated nation " . He wrote one note i.e,if the indians think that all that is foreign and English is good and greater than their own.

LEARNER

Search This Blog