Available Technologies.

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To:        Mrs Hawker 

From:     David Healan

Date:     29th January 2003

Subject:  Available Technologies

  1. Introduction

I am going to find out about available technologies to access and exchange information and carry out transactions such as;        

  • Internet Technologies- i.e. World Wide Web, e-mail, multimedia, encryptions
  • Internet Connection- i.e. modem, ASDL, broadband
  • Mobile Technologies- i.e. SMS, WAP
  • Digital Broadcasting
  • Personal Digital Assistant (PDAs) and organisers
  • Storage Media- i.e. DVD, floppy disk
  • Touch Screen Technology

  1. Findings

  1. World wide web

        

This is where you can browse websites from around the world e.g. banks shopping pictures etc. The Internet runs through a modem, which is either inside your computer or outside. The World Wide Web is www in short or also known as the web. To use the web you need an I.S.P (internet service provider) with the web you can password protect it from your children accessing illegal sites such and XXX. And there are also a lot of viruses on the web that are connected to programs we download.

Advantages- you can find your bank statement shop and much more

Disadvantages- with the Internet people can hack your computer and take your confidential material

2.2    E-mail

Email is short for electronic mail

Documents can be typed on a computer and sent around the world via the Internet at an average speed of 1000miles per second

It is free and a lot more efficient than the postal service

Anything from songs to video clips can be sent as attachments

E-mail is a method of sending messages from one terminal to another via a communications link.

To use e-mail you need access to the Internet

Advantages- using e-mail is like composing or reading a paper message, with several distinct differences:

  • It's faster. E-mail is received almost immediately after it is sent, usually within minutes.
  • It's more conversational. Because of its immediacy, a whole series of e-mail messages may be exchanged within a very short time. As a result, e-mail messages tend to be less formal and more chatty in style; they are also usually shorter and more to the point.
  • It's easier to reference. The text of a previous e-mail message can easily be included as part of a reply to that message. Thus, e-mail correspondents are able to keep the context of replies sent in each message. Including context is not only polite but also makes an e-mail message more immediately understandable.

Disadvantages- the disadvantages of email are, the email you send could take quite sometime. You can also get a lot of junk mail because when you sign up for something with out reading the terms and regulations you could be handing your email address out to everyone on the Internet.

  1. Multimedia

Multimedia is a mixture of text and graphics with motion

It is interview, which means that the user can decide on different routes through the software

It is ideal for learning as you can move the program as quickly or slowly as you like

It can make topics into fun games, which can educate without you knowing

It is usually distributed through CD-ROM or DVD 

Advantages- The power of multimedia is in engaging a variety of learning modalities (visual, auditory) that can appeal to various learner styles simultaneously.

Multimedia allows development of more engaging, persuasive presentations. Multimedia used in simulations or to enhance practice of skills can support transfer of learning

Disadvantages- Unfortunately, multimedia can be quite expensive for the following reasons:

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  • Acquisition or rental of equipment to produce multimedia can be costly.  

2.3   Encryption

Encryption is about keeping data secret

Codes can range from anything but as long as the sender and the recipient know the code, the message can be decoded

Encryption can be damaging as e.g. the police may want to monitor a suspected drug dealer and may need to find off a drop off point but are unable to decode the message.

Advantages- E-mails – sometimes we want our mail to be private!

People have a right ...

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