Code 39 Full ASCII Barcode ist eine universelle diskrete 1D-Barcode-Symbologie, die jedes ASCII-Zeichen codieren kann und den 43-Zeichensatz sowie ein Start- und Stoppzeichen enthält. Code 39 Full ASCII Barcode kann 128 Standard-ASCII-Werte mit drei Ziffern des ASCII-Codes codieren, denen das Zeichen vorangestellt ist. Der vollständige ASCII-Barcode von Code 39 ist ein eindimensionaler Barcode und wird auch als Extended Code 39 bezeichnet, da er die zusätzlichen Zeichen enthält, indem er zwei reguläre Code 39-Zeichen kombiniert.
Code 39 Full ASCII ist eine Variante des Code39-Barcodes, der alle 128 Zeichen in der ASCII-Tabelle codiert. Code 39 Die lineare Voll-ASCII-Symbologie überprüft sich selbst und codiert 128 ASCII-Zeichen mit 5 Strichen und 4 Leerzeichen. Es enthält spezielle Symbole wie $ / + % und wird mit 26 Buchstaben verwendet, um Barcode-Schriftbilder zu erstellen. Code 39 Full ASCII ist ein eindimensionaler Barcode, der die zusätzlichen Zeichen enthält, indem er zwei reguläre Code 39-Zeichen kombiniert. Diese Barcode-Symbologie wird hauptsächlich im Militär-, Fertigungs- und Gesundheitssektor verwendet. Die Software bietet eine Lösung zum Senden entworfener Barcodes an eine bestimmte E-Mail-Adresse mit E-Mail-Einstellungen.
Code39 Full ASCII Font Sample designed by DRPU Barcode Design Software.
Code 39 Full ASCII barcode structure
- A start character—the asterisk (*) character.
- Encode any number of characters.
- Checksum digit
- A stop character
Both Code 39 ASCII start and stop characters are asterisks. These asterisks are generally not shown in the text line, but sometimes they are shown in the text line with the asterisk marks. If the text line shows *1234*, need to enter 1234 because the stars are a fixed part of Code 39.
Code 39 ASCII Purposes
Code 39 has been recognized by the American National Standards Institute (ANSI) as MH10.8M-1983. It is the most widely used general-purpose barcode type. Code 39 ASCII's basic purpose is to encode a small amount of information containing alphabets as well as numeric characters in a linear pattern of bars and spaces.
Pros and Cons of Code 39 Full ASCII
Code 39 has the ability to encode the full alphabet and numbers (0–9), which is a unique capability in characters. The extension to the symbology, named Code 39 Full ASCII, uses some of the characters to shift the next character to lower case, allowing lower case characters to be encoded. Code 39 ASCII Barcode is a variant of Code 39 barcode symbology that encodes all 128 characters in the ASCII table.
Industry standards making use of Code 39 include the pharmaceutical industry, which has specified a standard format and renamed the symbology Code 32 since each character is used to encode five bits of alphanumeric data.
Although Code 39 Full ASCII was a revolutionary symbology at its inception, more efficient alphanumeric symbologies such as Code 128 have made it obvious how inefficient and limited Code 39 ASCII is due to its relatively large space requirements.
An optional check digit can be included in Code 39. Again, it is rarely used in practice because the encoder and decoder must agree on whether this mode is active.
Code 39 is relatively easy to print, and owing to its inter-character gap, can be printed by discrete print wheels and can also when used without its optional check digit, which is most often the case, be generated as a font in word processing and similar programs. Code 39 is relatively easy to employ Code 39 in a small, homegrown application.