Chinese Information Processing (I): Basic Concepts and Practice Unit 6: Synchronous Communication.

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Chinese Information Processing (I): Basic Concepts and Practice Unit 6: Synchronous Communication

What is synchronous communication? Synchronous communication means the real time communication. People connected to the Internet can type and post their messages to a ‘chat room’. As soon as the messages are sent, the other people who are in the same ‘chat room’ will see the posting. They can type their own messages to reply or comment on other people’s postings. They can also type and post their messages.

Beachboard’s Virtual Classroom is an example of synchronous communication. Students and instructors can type and read each other’s messages real time. There are two limitations of Beachboard’s Virtual classroom: it does not support Chinese and the text messages are too small in size.

What programs are available for synchronous communication? There are two types of synchronous communication over the Internet: Text chat and Voice chat.

Text Chat programs MUDs and MOOs MUDs and MOOs are early form of synchronous communication. MUDs stand for ‘multiuser dialogue’, ‘multiuser domain’ or ‘multiuser dimension’. MOOs are ‘MUDs object- orientd’

Any user connected to the Internet can reach a MUD or MOO via telnet, a program that uses the Internet standard protocol to communicate with the remote computer. Once connected, the users employ various simple commands to communicate with each other. All communication is synchronous (instantaneous).

Characteristics  They are text-based, and the user is required to use English.  Unlike , MOOs provide for immediate feedback.

Text Chat Program: IRC IRC stands for ‘Internet Relay Chat’. It is similar to MUDs and MOOs. The early form of the IRC is using telnet to reach an IRC server. Windows-based IRC programs were developed later and they provide an easier and more convenient access to the IRC server. Users download these IRC programs and install them on their own computer, connect to the server and begin to chat by typing.

Two Examples mIRC Microsoft Chat

Windwos-base Chat Web-based chat is even more convenient than Windows-based IRC programs. Users do not need to install any program. They reach a chat site, log in and begin to chat. There are two forms of web-based chat rooms: html version and Java Applet version. The html chat rooms are programmed in html (hypertext mark-up language) and the Java Applet char rooms are programmed in Java language. Not all chat rooms support Chinese codes.

ICQ ICQ stands for ‘I seek you’. It is a special synchronous communication program installed on your computer. You create a list of your friends or a ‘buddy list’. When your friends are online, you will be notified. You may initiate chat immediately. MSN, AOL and many Internet providers have this service now.

Voice Chat Voice Chat is the chat using voice. Once you connect to a voice char server, your can talk to other people in the same chat room or listen to their talking. The sound quality depends on several factors such as: speed of the Internet connection, Internet traffic and number of participants in the same chat room. Voice chat rooms may have a limit of numbers of participants.

Difference of half-duplex and full duplex mode Half duplex mode means that at one time, you can either talk or listen. Talking and listening cannot happen at the same time like telephone conversation. Full duplex mode means that talking and listening happen at the same time.