Discuss the function of a bar code reader and bar codes.
What will be an ideal response?
Student responses will vary, but should be drawn from the following information from the text.
A bar code reader, also called a bar code scanner, is an optical reader that uses laser beams to read bar codes. A bar code is an identification code that consists of either a set of vertical lines and spaces of different widths or a two-dimensional pattern of dots, squares, and other images. The bar code represents data that identifies the manufacturer and the item.
Manufacturers print a bar code either on a product's package or on a label that is affixed to a product, such as groceries, books, clothing, vehicles, mail, and packages. Each industry uses its own type of bar code. The United States Postal Service (USPS) uses a POSTNET bar code. Retail and grocery stores use the UPC (Universal Product Code) bar code.
You might also like to view...
Both DSL and cable networks require a device called a(n) ________ to connect to the Internet
Fill in the blank(s) with correct word
You can hide edges using the ____ menu.
A. File B. View C. Edit D. Window
Match each term with the best description.
A. Word document that contains the standard text for each mail-merge letter/label B. Is replaced with the value in the field that the code represents C. Data from an Access object is combined with a Word label or letter D. Helps you step through the process from Access with a Word label or letter
________ indicates a monitor's ability to display colors by comparing the light intensity of the brightest white to the darkest black.
A. Pixel width B. Resolution C. Contrast ratio D. Dot pitch