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The different bars reflect the scanners light differently and a sensor in the scanner interprets the different reflections which it translates into a number. Usually the number is also printed under the barcode so if the scanner cannot read it an employee can type it in manually. The number is the code that the store's computers can look up which tells its price and other information about it to the computer, automatically adding it to the purchase. Bar codes are designed to speed up checkouts so that an employee does not have to type in 100 ten-digit numbers.
What else can I help you with?
How is data held in a database?
Data is all of the information that is stored in a database (a file that stores records), it remains to be data unless it is published or verified as accurate and useful.
What kind of information is stored on a computers registry?
1. Hardware and software configuration information 2. Application settings 3. Users preferences
A computer needs what kind of device in order to provide information to a person or another?
Output device
What kind of communications device sends and receives data and information to and from a digital line such as ISDN and cable?
modem
What is a collection of data that has a name and is stored in a computer?
kind of vague question, but I think you mean partition. Partitions divide hard drives into logical volumes.
What kind of information is stored in a computer's memory?
Data and files
Why is information stored in some kind of binary format in computers?
Information is stored in some kind of binary format in computers because computer memory is made out of binary digits (bits).
What kind of information is stored in the boot recorder?
It contains information about the disk or logical drive.
What kind of products and services are offered by 123greetings?
More information about a product at 123greetings can be found online at the 123greetings website. The website gives you information about 123greetings products and which products are available.
What kind energy is in the products of photosynthesis?
The products of photosynthesis are glucose (a sugar) and oxygen. The energy stored in these products is chemical energy, which can be used by plants and other organisms for various metabolic processes.
How is data held in a database?
Data is all of the information that is stored in a database (a file that stores records), it remains to be data unless it is published or verified as accurate and useful.
What kind of information is stored on the registry?
profiles for each user, the applications installed on the computer and the types of documents that each can create,
What kind of information stored in a QR Code?
. so i am going to answer this question right? i am not really sure but i think it is stored by a computer or those electronic things. do you need the answer for your homework? or maybe something else? well, not my business right. OK, sorry that i am not really helpful and for the real thing, i need the answer for this question too for my homework. bye bye
What kind of products does Breas Medical AB produce?
Breas Medical AB produces products such as sleep solutions and other ventilation machines. You can get more information about these products at the Breas website.
What kind of information you can get from a chemical equation?
We know the composition of the reactants, the products, we can calculate the yield of the reaction etc.
Code optimization information can be found where online?
To find code optimization information online you would need to look for what specific kind of code you need optimized. The tantalon website for example contains information on how to optimize C++ code and although some if it might be transferred to other codes it's better to get specific instructions.
What kind of information does the Microsoft homepage offer its visitor?
Microsoft's homepage offers information about Microsoft's latest products, download links, and also a support section. There are also links to other popular Microsoft products such as "Xbox".
