Image
EAN-139780792854814   EAN-13 barcode 9780792854814
Product NameThelma & Louise
CategoryElectronics / Photography: A/V Media: Movie / TV
Short DescriptionWeight:0.3 pounds
Amazon.comA Buy on Amazon ~ B00007BKVC
SKU83-3T2U-4MF1
Model2221987
Price New4.99 US Dollars    (curriencies)
Price Used1.21 US Dollars    (curriencies)
RatingR - Restricted
IMDbIMDb Link
TrailerWatch The Trailer
Run Time130 minutes
Aspect Ratio2.35:1
CastChristopher McDonald, Geena Davis, Harvey Keitel, Michael Madsen, Susan Sarandon
DirectorRidley Scott
GenreAction/Adventure
Run Time130 minutes
Width5.5 inches    (convert)
Height0.75 inches    (convert)
Length7.75 inches    (convert)
Weight30 hundredths pounds    (convert)
BindingDvd
Release Year1991
FormatMultiple Formats, Anamorphic, Closed-captioned, Color, Dolby, Dubbed, Subtitled, Widescreen, NTSC
Published02/01/2003
Run Time130 minutes
FeaturesShrink-wrapped
Long DescriptionDirected by action master Ridley Scott (Hannibal, Gladiator, Black Hawk Down) from an Oscar(r)-winning* screenplay by Callie Khouri, Thelma & Louise is an "exhilarating" (The Washington Post), full-throttle adventure hailed as one of the best road movies of all time! Susan Sarandon and Geena Davis star as accidental outlaws on a desperate flight across the Southwest after a tragic incident at a roadside bar. With a determined detective (Harvey Keitel) on their trail, a sweet-talking hitchhiker (Brad Pitt) in their path and a string of crimes in their wake, their journey alternates between hilarious, high-speed thrill ride and empowering personal odyssey even as the law closes in. *1991: Original Screenplay
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Created03-03-2013 6:44:33am
Modified05-16-2019 3:47:30pm
MD58289c442227f9995517d91dd0eea9d68
SHA2569b96461d45c697e661e51847eef829f55a2740eed028723c9ea1dbc45c1418b0
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Article of interest

Barcodes are a graphical representation of information that can be easily read by machines. People read text easy enough but machines find this to be too complex so we use barcodes to simplify the process.

Barcodes can store numbers, letters and all the special characters. What can be stored in the barcode depends on which type of barcode is being used. But the basics of how a barcode works is the same regardless of what type of code it is, what information is stored in the barcode or what type of scanner is being used.

barcode scanIt all starts with the scan. The scanner, regardless of which type you are using, will examine the barcode image. The lines (or blocks in the case of 2D barcodes) will either reflect or absorb light. When we look at the barcode, we tend to see the dark stripes and think of those as the important parts. Those are the parts that absorb the light and the white parts reflect the light. So the scanners tend to see the barcodes in reverse of how we think of them. But the dark and light portions of the code on their own don't automatically become the information stored in the code. In most cases, it is the relative placement and size of each dark and light stripe (or block) that make up the information. There are also special markers that help the scanner know which direction the barcode is facing when it is scanned. This allows the scanning process to work even if the barcode is upside down when it is scanned. The scanner simply processes the scanned data in reverse in this case.

barcode oscolloscopeTaking a look at an oscolloscope screen as a scanner passes over barcode, you can see that the stripes reflect back light and the scanner registers the changes as high and low levels. So what looks like a simple image is really a rather complex set of layered encryption to store the data. The encryption isn't done to hide the information in this case. Instead it is done to make it easy for the machine to read the information. Since the base language of machines is binary (1 and 0) it is easy for them to read this type of information even if it takes several steps to turn this back into something that people can understand.

binaryThe size of each high and low are combined to make binary data. A series of 1 (one) and 0 (zero) values which are strung together then decoded into the actual information. Up to this point, the process is the same for all barcodes regardless of how they are stored. Getting the lines or dots into binary is the easy part for the machine. The next step is to make this binary code into something useful to people. That step depends on  which type of barcode is being scanned. Each type of barcode has its own encoding methode. Just like human languages, what seems to be two similar words (or barcodes in this case) could actually be two very different values even though they have the same basic letters (or bars).

So you can see that the scanning devices need to know not only how to turn the bars or dots into binary, but after they have done that they need to know how to turn that binary string into the original information. But regardless of the encoding process the basic steps are the same. Process the light and dark areas, convert them to binary, decode the binary, pass the information on to the receiving device which is normally a computer program of some sort.

Once the decoded data reaches the computer program, there is no telling how the information is to be used. The grocery store will use the information to keep track of the products you purchased as you go through the register. A manufacturer will use the code to identify where they are storing their parts. And shipping companies use the codes to keep track of the packages they are delivering.

Now that you know a little about the mechanical portion of the process, take some time to learn about the different types of barcode scanners and the different ways the information can be encoded into barcodes.

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