- Carbon Copy
 
      - When people use the CC function of their e-mail
      program they use it to copy additional recipients to an e-mail. See also blind
      carbon copy, e-mail.
 
      - CBT
 
      - See computer based training.
 
      - CC
 
      - See carbon copy.
 
      - Central Processing Unit
 
      - The main chip inside every computer that is used to
      run the operating system and the application software.
 
      - CERN
 
      - European Laboratory for Particle Physics, Geneva,
      Switzerland and birthplace of the World-Wide Web.
 
      - Certificate Authority
 
      - Issuer of digital certificates, used for encrypting 
      communication and signing documents. See also digital certificates, digital 
      signatures.
 
      - CGI
 
      - See common gateway interface.
 
      - Chat
 
      - Direct communication over the Internet with multiple
      persons. Other than e-mail, responses are made in real-time. See also IRC.
 
      - Checksum
 
      - A special calculation applied to a piece of 
      information. If the information is transmitted and the calculation achieves the 
      same result, then the transmission was successful.
 
      - Class
 
      - In object-oriented programming, a category of 
      objects, or the applet file itself. For example, there might be a class called 
      shape that contains objects which are circles, rectangles, and triangles.
 
      - Client
 
      - Application that resides on the customers computer 
      and contacts a server to communicate. Examples: IRC clients, Web Clients. See also 
      IRC, web.
 
      - Clipboard
 
      - A piece of memory that stores information only 
      temporarily. See also memory.
 
      - CODEC
 
      - Program or device that COmpresses/DECompresses 
      digital video.
 
      - Common Gateway Interface
 
      - A standard that describes how a web browser passes 
      on information to a web server. CGI programs are able to read the information, 
      process it and pass the results back to the web browser.
 
      - Compiler
 
      - A program that translates a programming language 
      into machine code. See also programming language, machine code.
 
      - Compression
 
      - Technology to reduce the size of files and save 
      bandwidth. See also bandwidth, lossy compression, non-lossy 
      compression.
 
      - Computer Based Training
 
      - Way of learning to use a computer and a software 
      package, offering information on a certain subject and a test for the pupil.
 
      - Concept Search
 
      - Instead of searching for documents that contain a 
      given keyword, a concept search will search for documents related conceptually to a 
      given keyword.
 
      - Connection
 
      - Established path for exchanging information.
 
      - Control Prog/Monitor
 
      - Operating System created by Gary Kildall in the 70's.
 
      - Cookie
 
      - Piece of information that is stored in the browser 
      and can be retrieved by the server that placed the information there. This piece of 
      information can be used to identify a user, for example.
 
      - CP/M
 
      - See control prog/monitor.
 
      - CPU
 
      - See central processing unit.
 
      - Cracker
 
      - A person who tries to break the copy protection 
      of software.
 
      - Credit Card Processors
 
      - Offer services for electronic businesses, such as 
      processing credit card transactions and verifying credibility of customers.
 
      - Crosspostings
 
      - A message that is sent simultaneously to several 
      newsgroups. See also message, newsgroups.
 
      - Cyberculture
 
      - A collection of cultures and cultural products 
      that exist on and are made possible by the Internet, along with the stories told 
      about these cultures and cultural products.
 
      - Cyberspace
 
      - First used in Neuromancer by William Gibson. It is 
      used to describe the Internet. See also internet.
 
     
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