电信专业英英词典A-4（在线收听）

　　补充：

　　Access - The process used for communication between your computer and the Internet.

　　Access Lines - A telephone line running from the telephone company’s central office to a point on your property.

　　Access Line Equivalents - A representation of the number of access lines that a system could hold.

　　Adobe Acrobat Reader - A software program developed by Adobe Systems, Inc., used to view files in PDF format. The software displays documents with the same layout and design as the original.

　　ADSL (Asymmetric Digital Subscriber Line) - A new modem technology that allows existing twisted pair telephone lines to access the Internet at T-1 speeds.

　　ASCII (pronounced: ask-ee) - ASCII is an acronym for American Standard Code for Information Interchange, a code that represents the most basic letters of the Roman alphabet, numbers, and other characters used in computing. ASCII characters allow us to communicate with computers, which use their own language called binary made up of 0s and 1s. ASCII files are also called text files.