They are devices designed to store, process and interpret data entered manually or entered by a Barcode / RFID reader. The data they store is usually transferred to other systems.
In this way, data from many terminals can be collected in the main center and transferred to the main system according to the work done. The predecessors were produced with DOS operating systems but nowadays there are different versions according to different requirements of windows operating system.
The handheld terminals, which are small enough to be used by hand, read the barcodes with a laser reader and an antenna system that can receive radio waves in Rfid systems. Prices are generally increasing in direct proportion to data transmission distances.
BARCODE PRINTER
Barcode printer is a printer used to print barcodes on labels. Like many different varieties, it varies in readers according to different barcode types.There are many brand and model barcode printers in the market. These barcode printers can produce thermal and direct thermal printing, as well as long-lasting barcode labels.
Barcodes designed with a computer link and label program; they can print on barcode printers much faster or they can print without the need for a computer.
BARCODE READER
It allows you to detect barcodes by reading them. The information transmitted after the dishwashing is analyzed and the result is reflected so that the data entry is performed much more quickly and correctly.
Once the barcode has been read with the appropriate reader, the board converts the black and white lines into electrical grades. Reader's decoders translate these signals into numbers or characters that we can understand.
The electronic signals generated by these readers' radiation and bar code rods are again detected by these readers and transferred to the computers as values or characters. The dark bars on the barcode absorb the light in the sky and the gaps reflect the light back. Sale of flat electronic signals.
Barcode readers can be on different interfaces. They can be keyboard, serial port or usb terminal. Besides these, radio-frequency barcode readers are available. They are wireless and have barcodes of their own activity space available.
"Datamatrix" type
barcodes are a type of barcode in a matrix structure consisting of white and
black squares or rectangles, unlike conventional one-dimensional barcodes. 
What is the advantage of square code type barcodes?
The advantage of 2D barcodes is that they can contain more data than conventional one-dimensional barcodes. For example, the barcode type datamatrix (datamatrix) can contain up to 2,335 characters.
Which readers will be using square code type barcodes?
Barcode type barcodes can be read quickly and safely with Datalogic family readers, which can respond to different needs in a wide range of applications in different application areas.
Datalogic Gryphon 2D as a corded reader, Lynx 2D CT as a wireless reader, Magellan 1000i as a desktop reader and Powerscan 7000 2D and Powerscan 8500 readers in an industrial reader can meet the needs of different areas.
According to the Temporary Article 2 of the "Regulation on the Amendment of the Regulation on the Packaging and Labeling of HERBAL MEDICAL PRODUCTS" published in the Official Gazette dated 2 February 2008 and numbered 26775, it will be obligatory to have a dataset in medicine packages as of 1.1.2009.
What is a barcode?
Barcode; is a method used for transferring data to another medium by reading bar code readers, which are composed of perpendicular lines at different thicknesses and spaces of different thickness between these lines, without error. Briefly, the barcode consists of lines at different thicknesses and spaces between these lines.
The barcode can be read by optical readers, also called barcode readers, and can also be scanned into software. Barcodes that can be used in each area are used for fast data entry in the Automatic Recognition Data Acquisition applications in the computer environment to acquire data from many fields, to scan and obtain the obtained data.
For example; barcode lines on a product in a store (usually on labels) do not contain information about the price of the product and the detail of the product. It's a reference number. The product is introduced to the store's computer with this reference number. The optical reader reading the reference number sends this number to the computer, and draws the information (product price, stock status, etc.) defined by that reference number on the computer. So when the price of the product or the stock status change, there is no need to change the barcodes, only the reference code product read by the software changes in our computer.
The barcode symbology used in barcode printing is an alphabet that determines where to print the lines and spaces in the barcode. Numbers 0 through 9 can contain alphabetic characters and some special characters (such as -, *, /). There are many barcode alphabets used in the world, some of which may consist of digits, some of which may be digits or characters.
