The original barcode scanner

The original barcode scanner


I've dipped into the archives of the US Patent and Trademark Office and pulled out the records of the original barcode pattern scanner, invented by N. Joseph Woodland and Bernard Silver. I've colored and numbered it to quickly illustrate how it worked. In the top picture, you can see the entire apparatus, including the barcode scanner, which is shown in the center in blue; in the lower picture, you can see a more detailed view of the scanner itself:



1.Like modern packages in grocery stores, Woodland and Silver envisaged items would have barcodes printed on one face.

2.You place the item to be scanned with its barcode face down on a conveyor made of some transparent material.

3.A variety of lights shine up on the barcode.

4.The scanner picks up light reflected off the barcode.

5.The scanner sends a signal to a sorting mechanism that can push the item in different directions.

6.The item is pushed onto different conveyors according to its particular barcode.

7.Now looking in closeup at the scanner: It has a lens on top that spreads the light reflected off the barcode.

8.The light from the lens spreads out onto a larger glass surface.

9.An electric motor and axle (red) move a scanning head (green).

10.Guided by the grooves in the axle, the scanning head moves from side to side.

11.A photoelectric cell (orange) inside the scanning head picks up the pattern of light and

"if u really want something, the whole world conspires in favour of u"

"if u really want something, the whole world conspires in favour of u"

The Coffee

A group of alumni, highly established in their careers, got together to visit their old university professor. Conversation soon turned into complaints about stress in work and life. Offering his guests coffee, the professor went to the kitchen and returned with a large pot of coffee and an assortment of cups - porcelain, plastic, glass, crystal, some plain looking, some expensive, some exquisite - telling them to help themselves to the coffee.

When all the students had a cup of coffee in hand, the professor said: "If you noticed, all the nice looking expensive cups were taken up, leaving behind the plain and cheap ones. While it is normal for you to want only the best for yourselves, that is the source of your problems and stress. Be assured that the cup itself adds no quality to the coffee in most cases, it's just more expensive and in some cases even hides what we drink.

What all of you really wanted was coffee, not the cup, but you consciously went for the best cups... and then began eyeing each other's cups.

"Life is the coffee, and the jobs, money and position in society are the cups. They are just tools to hold and contain Life, and the type of cup we have does not define, nor change the quality of Life we live. Sometimes, by concentrating only on the cup, we fail to enjoy the coffee."

Stress Management

A lecturer was giving a lecture to his student on stress management. He raised a glass of water and asked the audience, “How heavy do you think this glass of water is?” The students’ answers ranged from 20g to 500gm. It does not matter on the absolute weight. It depends on how long you hold it. If I hold it for a minute, it is OK. If I hold it for an hour, I will have an ache in my right arm. If I hold it for a day, you will have to call an ambulance. It is the exact same weight, but the longer I hold it, the heavier it becomes. If we carry our burdens all the time, sooner or later, we will not be able to carry on, the burden becoming increasingly heavier. What you have to do is to put the glass down, rest for a while before holding it up again. We have to put down the burden periodically, so that we can be refreshed and are able to carry on ! So before you return home from work tonight, put the burden of work down. Don’t carry it back home. You can pick it up tomorrow. Whatever burdens you are having now on your shoulders, let it down for a moment if you can. Pick it up again later when you have rested. Rest and relax. Life is short, enjoy it !! Cheers !!!!!

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