VideoLabs FlexCam iCam Technical Information PDF herunterladen (Seite 43)

16.14 ICT: Glossary

A/D converter A-to-D converter: a circuit to convert an analogue signal to a digital signal. Sometimes

also refers to a D/A converter.

Access

permissions

The resources allowed for a particular user or user group on a network or server and the

level of access, eg, access denied, read only, read / write etc.

Access

privileges

The functionality allowed for a particular user or user group on a network or server.

Account A record that details your user details such as username, password, permissions etc.

Account policy A set of rules governing the management of computer accounts.

ActiveX A group of technologies that permit compliant software to run and interact over a network

despite the language or platform in which the software was created.

Address bus An internal channel between the CPU and memory that transmits the memory address

from which the CPU will read or to which it will write.

Administrator A person or computer account that provides for the management and maintenance of a

system.

ADSL Asymmetric Digital Subscriber Line. A form of broadband connection to the Internet.

Adware A software application in which advertising banners are displayed while the program is

running.

AF Auto Focus.

AGP Accelerated Graphics Port. A type of expansion slot / card / bus designed specifically for

high-performance graphics display.

AI Artificial Intelligence.

AIFF Audio Interchange File Format. A format and file extension for a common audio file type.

Alias The name used to describe a shortcut to a file or program on a Macintosh computer.

Aliasing The jagged appearance of curves or diagonal lines on a display caused by a low screen

resolution.

Analogue Quantities / signals that can vary continuously, eg, temperature, voltage, light, sound.

Analogue port A port for connecting analogue devices.

Analogue

sensor

A device for converting an analogue quantity to a digital one which the computer can use.

ANSI American National Standard Institute. ANSI is the American representative of the Internat-

ional Standards Organisation (ISO).

Anti-alias A software technique for smoothing the jagged appearance of curved or diagonal lines

caused by low screen resolution.

API Application Programming Interface. See WIA.

Applet A small application that runs within a web browser.

Application A program that assists in the performance of a specific task eg, a word-processing,

program.

Array A list, table or matrix of data items of the same data type. An array is a basic data

structure typically constructed to perform calculations on a set of related data values.

ASF Advanced Streaming Format. A Windows multimedia-streaming format with .asf or .asx

file extension. See WMV.

ASCII codes American Standard Codes for Information Interchange. A coding scheme that assigns

standard numeric values to keyboard characters.

ASPI Advanced SCSI Programming Interface.

Aspect ratio The ratio of width to height in an image. Normally conserved during enlargements.

Assembly

language

A low-level programming language.

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