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Glossary

API. An interface by means of which one software component communicates with or controls another. Usually used to

refer to services provided by one software component to another, usually via software interrupts or function calls

Aperture. The opening in an optical system defined by a lens or baffle that establishes the field of view.

Application Programming Interface. See API.

ANSI Terminal. A display terminal that follows commands in the ANSI standard terminal language. For example, it uses

escape sequences to control the cursor, clear the screen and set colors. Communications programs support the

ANSI terminal mode and often default to this terminal emulation for dial-up connections to online services.

ASCII. American Standard Code for Information Interchange. A 7 bit-plus-parity code representing 128 letters,

numerals, punctuation marks and control characters. It is a standard data transmission code in the U.S.

Autodiscrimination. The ability of an interface controller to determine the code type of a scanned bar code. After this

determination is made, the information content is decoded.

Bar. The dark element in a printed bar code symbol.

Bar Code. A pattern of variable-width bars and spaces which represents numeric or alphanumeric data in

machine-readable form. The general format of a bar code symbol consists of a leading margin, start character, data

or message character, check character (if any), stop character, and trailing margin. Within this framework, each

recognizable symbology uses its own unique format. See Symbology.

Bar Code Density. The number of characters represented per unit of measurement (e.g., characters per inch).

Bar Height. The dimension of a bar measured perpendicular to the bar width.

Bar Width. Thickness of a bar measured from the edge closest to the symbol start character to the trailing edge of the

same bar.

BIOS. Basic Input Output System. A collection of ROM-based code with a standard API used to interface with standard

PC hardware.

Motorola MC70 User Manual

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