Electronic communication.ppt - Standard Grade Computing by pengxuebo


									Communications and Networks
   Standard Grade Computing Studies
  Electronic Communication
Electronic Communication is the
 process of sending and receiving
 electronic messages.

Electronic messages include electronic
 mail, text messaging and file transfer.
         Text Messaging
The technical name for Text Messaging is
 SMS (Short Message Service)
Text messages are short messages up to
 160 characters long which can be sent from
 one mobile phone to another through a
 messaging centre
As well as mobile phones, Text messages
 can also be received on devices such as
 pagers and some palmtop computers.
   Sending a Text Message
To send a text message you need:
     Mobile Phone
     An account with a service provider
     To be in an area of sufficient signal strength to
      communicate with the service provider.
One key on a mobile phone has many
A typical text message might include
 abbreviations which require fewer key
   Sending a Text Message
Some examples of abbreviations could be:
     2      To/too
     bcnu   Be seeing you
     pls    Please
Predictive Text tries to anticipate
 what the user will type.
Once the message has been composed,
 sending the message is just a matter of
 selecting the recipient mobile telephone
 number from the stored list on the mobile
 phone and selecting send.
Electronic-Mail is a way of sending and
 receiving text-based messages over a
 network. Both the sender and the recipient
 have an email address which identify them on
 the network.
Electronic mail is used mostly for sending
 letters, but anything which can be saved to
 disk can be sent by email, such as graphics.
  What is required for E-Mail
A computer system

Software - an email client program or an
 Internet browser

An electronic mail address or mailbox

Access to the Internet if the email is going
 outwith the local area network.
  What is required for E-Mail
Software - an email client program or an
 Internet browser.
     Email client programs can be used to send and
      receive email. These allow you to:
       see a list of all messages in your mailbox by displaying the
        subject, time and date
       select a message and read the email
       create new messages and send them
       set up folders to manage your email
       keep an email address book
       add attachments to messages you send
 What is required for E-Mail
  It is much more convenient to access email
   from any computer that has an Internet
  Webmail allows you to access email using

   an Internet browser program like Internet
  Hotmail is an example of Webmail
       Advantages of E-Mail
Email is much faster than sending a letter
  by post (snail mail)
Email is very accessible, since you can check
 electronic mail from anywhere in the world
There is no need to worry whether the person you
 are mailing is there to read the message because
 it will be stored by the system.
Email is cheaper than sending a letter by post.
You can send the same email to lots of different
 people at once.
Less paper is involved, not all emails need to be
    Disadvantages of E-Mail
You must check your mailbox regularly for the
 system to work
Email can be impersonal because there is much
 less interaction between the callers.
Email is not as secure as the postal system.
Junk email is a huge problem. Junk email or
 spam is email from strangers or companies whom
 you have not asked to send you anything.
Netiquette is short for network

Etiquette is used to describe a certain
 way to behave.

Netiquette is concerned with the way
 email messages are written and how
 others might interpret them.
A number of rules have been set up.
   Keep your messages short and to the point.
   Be careful about the language you use in a

   Use smilies (emoticons) to your messages

    to show your emotions.
       :-)                    :-(
     Avoid using capital letters as this is classed
      as SHOUTING.
 If you want to send somebody a file, you can
  ‘attach’ it to an email
 This means that the file is sent along with

  your email
 When your email is received, the attachment

  can be saved by the recipient
 Beware of opening attachments from people

  you don’t know. They may contain viruses. It
  is always a good idea to use a virus scanner
  on any attachments.

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