Letter A

Abstract An abstract class is a base class in a hierarchy that cannot be made an instance of due to a virtual function as a member. AC-3 Dolby Digital Surround Sound system. ACPI Advanced Configuration Power Interface. ActiveX Microsoft language to provide dynamic HTML content. ADA A programming language developed by the DoD to replace its 450 programming languages used in embedded systems. Ada is name after Ada Lovelace, the very first programmer. ADF Amiga Disk Format. Image of an Amiga floppy disk. Used for emulators such as Fellow, DOSUAE and Winuae. ADSL Asymmetric Digital Subscriber Line. High speed network over dedicated digital lines. Average speeds at 8Mbps downstream and 768Kbps upstream. See ADSL Guide Web site. Adware Programs or popups used to advertise products or collect private information on browser use for use by advertisers See Spyware. AGA Advaced Graphics Architechure used on Amiga 1200 and 4000 models. Agnus Chip used in Amigas for Chip memory management and Blitter. AHCI Advanced Host Controller Interface. Used by SATA drives to provide higher speeds, hot swapping and native command queuing which is not offered in IDE modes. Turning it off or switching to IDE emulation will allow earlier versions of Windows to be installed. ALGOL ALGOrithmic Language used mainly for Scientific computations, not widely used as COBOL or Fortran. See ALGOL. AGP Advanced or Accelerated Graphics Port. Very fast expansion port for graphics card in PCs and new Power Macs. Air Adobe Air is a plugin to develop rich web applications. Alice Chip in 1200 or 4000 for AGA for 2MB Chip ram. Replaces Agnus. Alpha Software in early stages of development with many features not available and bugs not removed yet. Probably unstable as well. AMD Advanced Micro Devices. Manufacturer of x86 compatible processors such as the K6-2, K6-3 and Athlon chips. AMD64 AMD's 64 bit expansion of their x86 processors to add 64 bit capability. Amiga Range of 16/32 bit computers produced by Commodore in mid 1980s. More information here. AMR Audio, Modem Riser. New slot for software based modems and audio cards. Usually looks like a very short brown slot near PCI slots. Android Name of open source operating system for SmartPhones and tablet devices developed by Google. See Android.com. ANSI American National Standards Institute. See website. AOL America On Line. Propietary Internet provider using their own software to provide a `portal` to the internet. Apache Open Source Web Server used widely on Unix Systems. The TomCat version includes Java scripting. API Application Programmer's Interface. The frontend of programs and functions need to write applications for a given system. DirectX is the API for games and multimedia applications. APM Advanced Power Management. Software control over power saving features of the PC. Arc An older compression method. Superceeded by ZIP and LHA. ARP Address Resolution Protocol. Converts Ethernet MAC addresses to IP addresses. Allows Broadcasting on LANs. ASCII American Standard Code for Information Interchange. Code for displaying letters, numbers and symbols on computers. ASIO Audio System Input/Output. Provides direct access to audio hardware to reduce latency. ASP Active Server Pages. Dynamic programming language for HTML which can be written in Visual Studio or the older Visual Interdev. ASP Application Service Provider. Rather like an ISP but provides application software for business over a network or internet. ASR Automatic System Recovery. Feature of Windows Me/2001 which will protect system files from being overwritten by invalid or older system files. Assembler Program to produce machine code from Assembly language programs. Assembly Assembly language. Programmers use a symbolic language to produce one-to-one instructions as the machine code equivalent. Used for speed and low-level functions. AT Advanced Technology. For 80x86 based processors or higher. ATAPI AT Attachment Packet Interface. Standard used for IDE devices such as CD ROM drives. (ATA) Athlon High speed processor by AMD. Compatible with Intel's x86 processors. Athlon64 AMD's new 64 bit processor to replace older 32 bit processors. Similar to Intel's Itanium but retains some 32 bit compatibility. ATX A standard motherboard (and case) size with Power Management. AWARD Name of a common BIOS chip manufacturer. (Now part of Phoenix).

Converted with g2h, © 24.06.1998 N. DARNIS