Bar Code Glossary

Application Program:
  • A computer program that performs useful work not related to the computer itself. Examples are word processors, spreadsheets, accounting systems, and engineering programs.
  • American Standard Code for Information Interchange - a standard code for representing characters as numbers used on most microcomputers, computer terminals, and printers.
Aspect ratio:
  • The ratio of the bar code height to bar code width.
Character string:
  • A sequence of characters stored in a computer and treated as a single data item.
  • A number that accompanies data transferred from one place to another that helps to ensure the data was transferred correctly.
  • A holding area in Windows to which information can be copied in order to transfer it from one application to another.
  • Characters Per Inch: the number of characters a fixed width font will print per inch.
  • Dots Per Inch: the number of pixels or printer dots per linear inch.
  • A complete collection of characters, in a consistent style and size. This includes upper and lower case letters, numerals, punctuation, ligatures, and reference marks.
  • A mathematical operation that gives a remainder when one number is divided by another.
Parity pattern:
  • A clever way of encoding extra data, like a checksum, in the individual characters of a bar code.
Scalable font:
  • A font that can be used to print characters of any size. Many newer laser printers include scalable fonts.
  • A method of representing information by printed characters.
TrueType Font:
  • An outline typeface that can be scaled or sized to practically any size.
Start Code:
  • The leading character of a bar code that identifies what kind of bar code it is.
Stop Code:
  • The last character of a bar code that tells the bar code reader when it has reached the end of the code.
  • A program that assists in the operation of a computer but does not do the main work for which the computer was bought.
Visual Basic Function:
  • A small program written in Visual Basic and used in products like Excel, Access, or Word to help create bar codes.