Spring 2011AOU

Spring 2011AOU 2 Section 1: Joining The Online World 1.1 and computer-based forums 1.2 Computer Mediated Communication

Spring 2011AOU 3 Ways of Communication  Synchronous: Contacted parties must be present (online) at the same time of communication. Examples: telephones and video\audio conferencing  Asynchronous: one could communicate without being connected at the same time as the person being contacted. Examples: s & conferences

Spring 2011AOU 4 Electronic-Mail

Spring 2011AOU 5 What is an ?  Electronic Mail.  An asynchronous means of communication.  A message exchanged among computers connected through networks.  Electronic mail, or s is the process of sending messages to specific person directly from one computer to another to a specific addresses.

Spring 2011AOU 6 services  Built in packages: Outlook Express with Microsoft Internet browser.  Web-based services: Hotmail and Yahoo mail.

Spring 2011AOU 7 packages  Specialized packages allow you Keep copies of your messages on your hard disk. Organize them into folders of your own choosing. Set up mailing lists and address books Do searches through your messages for key words. Write messages without being connected to the Internet. You then connect to send them and receive new ones. This is called 'working offline'.

Spring 2011AOU 8 Web-based services  Connect to the service's website.  Read and write all your messages entirely ONLINE.  Not necessary to set up your computer specially with your address.  Can access it from anywhere.

Spring 2011AOU 9 Parts  Header: Contains information about the recipients, the sender, and message title, and has the format: To: (recipient’s address) Such as: Cc: (addresses for people who should receive carbon copy from the message). Bcc: (addresses for people who should receive blind carbon copy from the message). Subject: message’s title, such as: ( Hi ) Attachment: where you can specify a file to send through .  Body: Is the area where you can type your message.

Spring 2011AOU 10 Development  Voice mail A spoken version of electronic mail. A voice mail system translates the words of a message into digital impulses, then stores them on disk.  Mailing List (Group Discussion) Messages could be addressed to several people at once. Allow group discussions.

Spring 2011AOU 11 Computer Conferences

Spring 2011AOU12 Computer conferences (FORUMS)  These are group discussions.  Use a computer as a communication medium to exchange text messages stored on it.  Messages sent to the conference, can be viewed by all people who can enter the conference.  Example: MOODLE ( TGF,TGA 1,2&3 ).

Spring 2011AOU13 Computer-mediated dialogues  Can have an unlimited number of entries.  A participant can be involved in many on- going dialogues at any time.  Once closed can’t be reopened.

Spring 2011AOU14 Comparison between Conferences and Face-to-Face meetings  Advantages: People can participate regardless of face- to-face meetings difficulties. Easier for people who are housebound or have disabilities. There is no problem in getting your turn to speak. If you miss part of a discussion, there is a written record to let you catch up

Spring 2011AOU 15 Comparison between Conferences and Face-to-Face meetings  Disadvantages: There is a delay between sending a message and receiving a reply. Asynchronous discussions are very much slower than synchronous ones. Tone of voice and body language are missing since messages are text-based. You can only participate in a computer conference if you have a computer!

Spring 2011AOU 16 More on Communication

Spring 2011AOU17 Computer-Mediated-Communication (CMC)  Is any communication using computers. . Mailing Lists. Conferencing Software. World Wide Web (www).

Spring 2011AOU 18 Communication Systems:

Spring 2011AOU19 Communication Systems: 1-Terminal –to– Mainframe system  All users were connected by using terminals.  These terminals had a screen and a keyboard, but no computing power of their own.  All the processing and data storage was done in the mainframe.  Terminals did not do any processing.

Figure 1: Terminal –to– Mainframe system

Spring  Mainframes periodically send all outgoing mail across the networks that linked them, to recipients' computers. Communication Systems: 2-Several main-frame networks Figure 2: Several main-frame networks

Spring 2011AOU 22  Small local machines (clients) became of considerable computing power.  Central machines, (servers) run continuously and are accessible to all authorized users.  Personal computers connect to servers any time.  Processing load is split between PC and server as appropriate.  The local machines act as 'clients' of the 'server'. Communication Systems: 3-Client-Server System

Figure 3: Client-Server System

Spring 2011AOU24 4-Advanced client  Can do much more than display the current message:  It normally stores sent & received , and allows the user to organize it into folders.  If an client can act as an 'offline reader':  It automatically connects to the server, collects messages waiting there, sends messages written since the user last connected, and then disconnect.

Figure 4: Advanced client

Spring 2011AOU 26 Browse the AOU-LMS & TU170 website. Class Activity

Spring 2011AOU 27 Thank You !