How do barcode scanners work and what are the processes of shop registers etc?

How do barcode scanners work and what are the processes of shop registers etc?
I’m doing Information Technology this year and our task is to prepare a written explanation on the processes that are used from the time when a customer (eg, you) puts an item up on the counter to buy (eg, a can of drink) to the time when you get your receipt.

Meaning like the whole process of scanning the barcode and then the system registering it and then the money handling and then all that sort of thing..

I have to find out how these processes work and that sort of thing, can anybody help me? Sorry if this is worded terribly, I just don’t have the question on me, and It’s all rather confusing…

Just basically how does it all work.
Any help would be appreciated!!!

Best answer:

To understand how a barcode scanner work, it is important to first understand how barcodes are produced and being read.

Each barcode has specific symbols defined as a series of bars in a barcode. The way to differentiate the barcode is by the height and width as well as the bar spacing. Each strip of bar can represent a number, character or alphanumeric character depending on which type of barcode symbology set is used.

Usually a barcode contains a start and end bar to denote the starting and ending point of the barcode. Sometimes, there is an additional bar called the checksum bar. The purpose of the checksum bar is used to determine whether the barcode is correct after calculation and ensures the accuracy of the barcode.

The barcode scanner’s photosensors can then read the barcodes and convert them to electrical pulses. Since each strip of bar is equivalent to a character, the barcode software can easily convert these electrical pulses into readable text that can be displayed on a monitor. This process is actually very fast and only takes a few milliseconds.

Nowadays there are many varieties of barcode scanners models. Their usage depends a lot on the type of industry and the work environment. Examples are desktop models, handheld and portable models.

One of the most popular type is the wireless barcode scanner. They connect to the base station or workstations wirelessly and can transmit data back to the terminal as long as they are within the wireless range radius.

Wireless barcode scanner are often used in the warehouse industry where workers can easily scan a barcode that can be placed in awkward positions or angles. It is also used in industries where goods are often moving from one location to another. Using a wireless barcode scanner allows freedom of movement and thus more efficient.

Tags: Barcode, processes, registers, scanners, shop, work

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