Aspects of E-Business

Microcomputer Applications Information and Communication Module 7 Training Department [email protected] Getting Started In this section student will learn and practice how to: Use application Help Define Internet functions Open a web browsing Close the web application browsing application Understand the make Change view/display up and structure of a modes web address Modify toolbar display Display a given web

Display images on page Change the web web page Do not load image browser home page Save a web page as a files onto web page. file @University Computing Centre Information and Communication 2 Definition What is Internet? Internet comes from the word Internetworking A connection of data processing nodes that are interconnected for the purpose of data

communication A communications in which the end instruments are computers @University Computing Centre Information and Communication 3 The Internet and World Wide Web (WWW) The World Wide Web is just a small part of the Internet as a whole The internet relates to all the hardware and software involved, as well as including the WWW, also includes FTP, email and newsgroups The WWW is basically the text and pictures that you can view using your web browser, such as Microsoft Internet Explorer, or

Netscape Navigator @University Computing Centre Information and Communication 4 HTTP Because the Internet is made up of different networks and computers, the WWW need a common method for exchanging documents. The protocol-set of rules-that allows txt with built-in links (hypertext) to be transmitted from computer to computer is called the HYPERTEXT TRANSFER PROTOCOL, OR HTTP. World Wide Web dresses typically begin with the letters http.

@University Computing Centre Information and Communication 5 HTTP, URL, Hyperlink, ISP & FTP Make sure you understand the terminology! @University Computing Centre Information and Communication 6 HTML

Documents on the web are written in a computer language called hyper text markup language ( HTML). This language provides for links not only to other parts of the same documents but to other documents on computes in any part of the world. @University Computing Centre Information and Communication 7 Structure of a Web Address http://www.microsoft.com @University Computing Centre

Information and Communication 8 Web Browser Web browsing applications include Internet Explorer (from Microsoft) and Netscape Navigator/Communicator The web browser allows you to view web pages @University Computing Centre Information and Communication 9

Internet resources Apart from the www, the internet ca be used to send electronic mail ( e-mail) and to transfer files between computers. File transfer Protocol( FTP) is a program th allow you to transfer files between computers on the internet as distinct from transferring files for immediate viewing. Transferring a file from a remote computer to your own computer is called downloading the file. Sending a file to a remote computer is called uploading. @University Computing Centre Information and Communication

10 Internet resources Cont. Other facilities available on the internet include NEWS GROUPS for the dissemination of information to interested groups, and Internet Relay Chat which allows people to communicate with each other instantly by typing text keyboard- rather than by talking on the telephone. @University Computing Centre Information and Communication 11 Why-Network?

Sharing files Sharing other devices (printers) Sending messages Central administration of all devices Supporting network applications like: E-mail Database services @University Computing Centre Information and Communication 12 Network-Types

Local Area Network (LAN) Metropolitan Area Network (MAN) A network situated in one geographic location (a office / school / factory) A network which connects several LANs / users spread over a smaller geographic area (a case of University of Dar es Salaam) Wide Area Network (WAN) A network which connects several LANs / users spread over a larger geographic area (larger companies, ATM-network, Internet)

@University Computing Centre Information and Communication 13 Network-Client-Server Types of servers: Printserver Fileserver Application server Mailserver Proxyserver Webserver @University Computing

Centre Information and Communication 14 Network-Hardware Computers Communication devices Transmission Medium Connection Devices @University Computing Centre Information and Communication 15

Security Considerations @University Computing Centre Information and Communication 16 Connecting to the internet To connect a home computer to the internet you will need the following. A computer

A modem A telephone line An account with an internet service provider (ISP) Software: a web browser and e-mail program @University Computing Centre Information and Communication 17 Protected Web Sites A protected site is a site that allows only restricted access @University Computing Centre Information and Communication

18 Understanding Encryption Digital Certificates A digital certificate is used to encrypt information for secure transmission across the Internet Encryption is a means of 'scrambling' an email message It is used to make a message more secure @University Computing Centre

Information and Communication 19 with a Virus from a Downloaded File If you download anything from the Web (even a document file), there is the possibility that the downloaded item may have been infected with a computer virus @University Computing Centre Information and Communication 20 Fraud Implications when using a Credit Card on the Internet

Fraud Implications when using a Credit Card on the Internet @University Computing Centre Information and Communication 21 Firewalls Helps protect your computer from hackers and computer viruses Can be a combination of hardware or software

Your Computer @University Computing Centre Everyone Else Firewall Information and Communication 22 First Steps with the Web Browser @University Computing Centre Information and Communication 23 The computer

Any computer that is not more than few years old can be used to connect to the internet. however, as the graphics and video content on the www is becoming increasingly complex, requiring large amount of memory and processing power, a more recent computer is advisable. The relevant software for your computer is freely available and is usually supplied with modern computers @University Computing Centre Information and Communication 24 The modem

A modem and a telephone line are needed to proved internet access to one computer The modem changes computer signals into telephone signals and vice versa so that they can be sent from computer to computer over standard telephone lines. A modem can be fitted to your computer internally or externally. A single modem and telephone line cannot normally be shared by other computer. @University Computing Centre Information and Communication 25

Telephone lines You need a telephone line to connect to the internet. The line can be an ordinary telephone line or an ISDN line. An ISDN ( integrated services digital network) line is high-speed digital line. It does not need modem- other equipment is used instead- as it can transmit the compute signal without having to convert them into normal telephone analogue format. @University Computing Centre Information and Communication 26

Internet service providers To connect to the internet, you also need an account with an internet service provider ( ISP). The account may be a subscription account or a free account. Free account: do not require a subscription to be paid. When you open an account with an ISP, it supplies you with a Username, a Password and other details which enable you to connect to and use the Internet. @University Computing Centre Information and

Communication 27 The Structure of a Domain Name A domain name always has two or more parts separated by dots For example, the domain name for IBM is "ibm.com the United Nations is "un.org. The three-letter domain name suffix is

known as a generic top-level domain It describes the type of organization In the last few years, the lines have somewhat blurred between these categories @University Computing Centre Information and Communication 28 The Structure of a Domain Name com or co - business (commercial) .edu or ac - educational organization

.org or or - non-profit organization .mil - military .net - network provider .gov or go - government agency @University Computing Centre Information and Communication 29 The Structure of a Domain Name Cont.

.au - Australia .ca - Canada .fr - France .de - Germany .uk - United Kingdom .tz - Tanzania .za - South Africa .ke - Kenya @University Computing Centre Information and Communication 30 What is a web browser?

A web browser is a software that allows you to view, navigate and interact with the World Wide Web. Currently the two most commonly used browsers are internet explorer and Netscape navigator @University Computing Centre Information and Communication 31 Opening Internet Explorer There are several ways which you can use to Start Microsoft Internet Explorer 1st Option Click Start Button

Select All Programs Select Microsoft Office Click Microsoft Internet Explorer @University Computing Centre Information and Communication 32 Opening Internet Explorer 2nd Option If there is a shortcut to Microsoft Internet

Explorer at the Desktop: OR OR Double click the Icon Right Click the Icon Click Open Click the Icon once Press the Enter Key @University Computing Centre Information and Communication 33

Internet explorer window Help menu Title bar Standard buttons Address (URL) Web Page @University Computing Centre Status bar Information and Communication 34 What is a web address?

A web address is a collection of pages on the web owned by an individual or organization. The first page of a website is the home page Every web page has a unique address. This is known as a URL ( Uniform Resource Locator) it usually begins with http://www: (http stands for Hypertext Transfer Protocol and tells a web browser that it is looking for 35 Information and a web page.) @University Computing Communication Centre Web address cont. Most modern browsers have http:// stored so you

can start at www. Some URLs include: http://www.bbc.co.uk http://www.bargainholdays.com http://www.nhm.ac.uk http://www.isvgroup.co/ittest The text after the www shows the domain name, the organization's name- e.g. BBC, bargainholdays and nhm (Natural History Museum) the type of site, - e.g. .co and .com are commercial companies; ac is an academic community, and the country, - e.g.uk is United Kingdom. @University Computing Centre Information and Communication

36 Web address cont. NOTE: the dots are important in a web address and the address must be spelt correctly. Sometimes URLs are longer because they include the pathname to the web page. e.g.: www.bbc.co.uk/weather/worldweather/europe/index.shtml Name of the page document Folders where the Information is stored @University Computing Centre Information and Communication 37

Displaying a given web page To display the following web page http://www. http:/www.isvgroup.com/ittest Method (ways or steps) In the web address box, type http:/www.isvgroup.com/ittest Then press: Enter or click on; the Go to button The first page of isvgroup website is displayed @University Computing Centre Information and Communication 38 Stopping a Web Page from Downloading

Use the Stop icon @University Computing Centre Information and Communication 39 The home page @University Computing Centre Information and Communication 40 Changing your web browsers home page

Method Go to udsm.ac.tz home page by keying in the web address. The udsm.ac.tz home page appears From the tools menu, select Internet Options. The Internet Options dialogue appears With general tab selected, in the Home Page section, click on: Use Current. Click on; Apply and then on: OK . e.g. http://www.thisisbritain.co.uk @University Computing Centre Information and Communication 41

Displaying/not displaying images Method From the Tools menu, select: Internet Options. In the Multimedia section, click in the boxes next to Show pictures, play videos, play Animations so that there are no ticks. Click on: Apply and then on: OK. The home page is displayed without image To re-load (return) with image follow steps 1 to 5 again this time placing ticks where they were removed. Click on: the Refresh button to redisplay the page with images @University Computing Centre Information and Communication 42

Changing view/display You may find that you want to change the look of web pages to suit your needs-i.e.. colors, fonts, etc which you find easier to read. To change settings: From Tools menu select: Internet options. With the general tab selected, click on; colors and make your choices. Similarly, click on; fonts to set your preferences. Click on: Apply and then on: OK Changing text size From the view menu select Text size. Select the size you prefer Information and

@University Computing Centre Communication 43 Saving a web page as a file Method From the file menu, select; Save As. The save as dialogue box is displayed. Select the location where you want to save the web page e.g. local C: and key in a file name (File name) @University Computing Centre Information and Communication 44

Exercise One Open a Web Browsing Application What is a Web Browser Home Page? What is encryption and why is it used? Set udsm.ac.tz as your home page Then change the background color to be Red Visited link to be in yellow Un visited link to be in green Font color Tahoma Text color white Hover mouse- in Pink @University Computing

Centre Information and Communication 45 Browsing and favorites In this section you will practice and learn how to: Browse a specific site and collect data Open a hyperlink or an image link and return to the original page Add a web page to favorites Open a favorites web page @University Computing Centre Information and

Communication 46 Using hyperlinks Web pages have links ( called hyperlinks) that you can click on to take you to other places within the current site or to other websites. Links can take the form of underlined text, text in a different colour or they can be image links. When you hover over a link, a hand ( usually) appears. @University Computing Centre Information and Communication 47 What is a hyperlink?

Hyperlink is simply part of the text (or graphics) on a Web page, that when clicked on will automatically: Take you to a different part of the same page Take you to a different page within the Web site Take you to a page in a different page in a different web site Enable you to download a file Launch an application, video or sound @University Computing Centre Information and Communication 48

Copying web page Method Click on the link. Another page of the site is displayed. Notice that the address and Title bar have changed to reflect that you are viewing another page. Collect the information you are looking for. Select the data so that it is highlighted. Click on: the Copy button. Open an application to copy it to e.g. Word. Click on: the Paste button Return to the original page by clicking on the Back button. @University Computing Centre

Information and Communication 49 Saving a list of your favorite web sites When you find a site that you would like to visit again, or a site that you visit often, it is a good idea to save the address of the site to make it easier to re-visit in the future. e.g. save the Natural History Museum site in your Favorites list. Method With the home page of the site displayed, from the Favorites menu, select; Add to Favorites. The Add Favorite dialogue box is displayed. A default name already appears in the Name box. Change the name if you want to. Click on: Add

@University Computing Centre Information and Communication 50 Creating favorites Click on favorite button from the menu bar Click Add to Favorites (Dialogue box appears) Your website name will appear in the Name box ( you can change it if you want) Then You can do the following: In the create in box, click the down arrow and choose the folder in which you can add your

website Or You can create a New folder by clicking a New folder button, type the folder name and then 51 Information and click create @University Computing Communication Centre ACCESSING FAVORITES Click the Favorites Menu Select the website name. OR Click Favorites Menu Select the Folder in which you have added your

favorites Click on the website name @University Computing Centre Information and Communication 52 Organizing favorites So that your list of favorites does not become unmanageable, you can organize t by creating folders to store similar content pages. Method

From the Favorites menu, select: organize Favorites The organize Favorites dialogue box is displayed Click on: the Create Folder button. Key in a name for the new folder and press: Enter. Drag the relevant favorites into the folder. Click on: close NOTE: Use the Move to Folder button when moving multiple favorites. @University Computing Centre Information and Communication 53 Exercise Two

Understanding the make-up and structure of a web address Open a web browser. Display the following websites as your home pages: http://www.darhotwire.com, http://www.ucc.co.tz Set one of the site home pages as your web browser FAVORITES Save the web page as a file IN MYDOCUMENTS Change the browsers settings so that images are not loaded. Change background color to RED, hover to Green Display the following home page

http://www.bbc.co.uk, www.passionup.com, www.riversongs.com 54 Information and Save the sites as a files @University Computing Communication Centre Add riversongs.com and passionup.com to your favorites Serching Engine @University Computing Centre Information and Communication

55 Search Engine Allows you to search for relevant information on the Web In this section you will practice and learn how to: Define search requirements Use a key word in a search Use common logical operators in a search Modify page setup options Print a web page Present a search report as a printed document @University Computing Centre Information and Communication 56

Searching the web There are many ways that you can find information on the web If do not know an address where you can find it, you can use a search engine. If you know the web address of the site where you can find the information, go straight to the site by keying in the address and using hyperlinks to navigate through the site ( or use the sites search box if it has one) Common search engines include: http://www.altavista.com http://www.hotbot.com http://www.excite.co.uk http://www.Infoseek.com http://ask.co.uk @University Computing Centre

Information and Communication 57 Searching cont. Using a directory. A search directory sets out information in subject categories. Currently, the most common search directory is Yahoo http://www.yahoo.com Other common search directories include: Magellan http://www.mckinley.com Lycos http://www.lycos.com LookSmart http://www.looksmart.com Whats New http://www.whatsnew.com Uk Online http://www.ukoline.com Google http://google.com @University Computing

Centre Information and Communication 58 Cookies and Cache What are cookies? Some web sites can store hidden information about you on your hard disk What is an Internet cache? Each time you display a web site within your web browser, a copy of the

information (both text and pictures) is saved on your hard disk @University Computing Centre Information and Communication 59 Using search engine Method Access the AltaVista web site. In the search box, type in: ECDL and enter it by clicking on Search. Your will get the search results Follow up the links. @University Computing Centre

Information and Communication 60 Exercise Three Display the given web Page Access the site listed below: WWW.topsy.org/keyboarding Using hyperlinks find out some information that is available on the this page. Add this website to your favorites in a folder with the name keyboard practice Using the Search button By using the google search Engine Key ECDL into the search box and enter or click

on search button Your search revealed more than one possible links Follow the links for more information. @University Computing Centre Information and Communication 61 Using logical operators Using AND Use AND or one of the symbols when searching for more than one word. Results will list sites that contain all the search word Example:

You are interested in finding information on football and in particular Everton. In the Search box, type in Football + Everton. Press go to or search Using OR Example: you are interested in finding information about cameras. You could type in Camera OR photography. @University Computing Centre Information and Communication 62 Modifying page ready for printing Method From the file menu, select page setup Change the paper size, orientation and

margins. Use internet explorer help if you want to set headers and footers Click on ok @University Computing Centre Information and Communication 63 Setting Headers and Footers The following table describes how to print the date or time, page numbers, window titles, or page addresses to Headers or Footers on your printed pages. In the Header and Footer boxes,

specify the information to be printed by using the text codes shown in the table. These codes can be combined with words (for example, Page &p of &P). @University Computing Centre Information and Communication 64 Use Headers and Footers To print this Type this Window title &w Page address (URL)

&u Date in short format (as specified by &d Regional and Language Options in Control Panel) @University Computing Centre Information and Communication 65 Use Headers and Footers To print this Type this Date in long format (as specified by Regional

&D and Language Options in Control Panel) @University Computing Centre Information and Communication 66 Use Headers and Footers To print this Time (as specified by Regional and Language Options in Control Panel) Type this &t Time in 24-hour format

&T Current page number &p @University Computing Centre Information and Communication 67 Use Headers and Footers To print this Total number of pages Right-aligned text (following &b) Centered text (between &b&b) A single ampersand

(&) @University Computing Centre Type this &P &b &b&b && Information and Communication 68 Use Headers and Footers Centered text (between &b&b) A single ampersand (&) @University Computing Centre

&b&b && Information and Communication 69 Printing a web page Method From the file menu, select print. The print dialogue box is displayed Make selections as appropriate. If the web page is divided into frames,

enter your choices in the Print Frames section. Click on ok @University Computing Centre Information and Communication 70 Exercise Four Search Engine Using a search engine or a search directory, find answers to some of the following questions: Leeds? Are there any changes in route.

What is the current line-up of the Leicester City football team? What is on BBC1 and ITN at 8pm this evening? What is the population of the UK? What time do trains depart from Bristol tomorrow morning ( leaving at approx 9.30 am), destination ? @University Computing Centre Information and Communication 71 Email @University Computing Centre Information and Communication 72

Getting started with email In this section you will practice and learn how to: Open an electronic mail application Use application Help functions Change display modes Modify toolbar display Create a new message Insert a mail address in the mail to box

Deleting a file attachment Replying to a message Cut/copy and paste Deleting message Moving/copping massages to a new mail folder @University Computing Centre Information and Communication

Insert a title in the subject field Use a spell checking tool If available) Send a message with low/high priority Copy a message to another address Use blind copy tool Receive messages Add an autosignature to a message 73 Sorting massages Introduction The following sections focus on sending and receiving e-mail using Microsoft Internet

Explorer By demonstrating the methods used by Internet Explorer you will gain an insight into the procedures involved even though you may be using different e-mail system. Note: since outlook express can be configured to suit your needs, the outlook express settings used in the examples may differ slightly from your settings. This could result in some of the methods given not conforming exactly to those that you may see on your computer. @University Computing Centre Information and Communication 74 Opening web browser Method From the start menu, select: programs, outlook Express

OR click on: the outlook express icon on the Taskbar Note: the folders list contains: Inbox folder where incoming messages are store Outlook folder where sent messages are stored Deleted Items folder were deleted items are store Drafts folder where draft messages are stored. @University Computing Centre Information and Communication 75 Creating Message @University Computing Centre Information and Communication

76 Creating messages Create the message (shown below) and send it to someone you know who has an e-mail address. Note: if you do not have anyone to send it to, send it to your own e-mail address. Hi there [insert persons name( receivers name) I am learning how to use e-mail. Please let me know if you have received this message. Thanks (Insert your name] @University Computing Centre Information and Communication 77 Creating messages

Cont Method Click on: the new mail button The new message window appears Click in the To: box and key in the e-mail address of the person you are sending the message to. Check that you have keyed in the address correctly. Click in the header section, subject line and key in: Just Testing Click in the message section underneath and key in the message. The subject of your message just testing has replaced new document on the Title bar.

NOTE: Click on: send button NOTE: this will not send the message at this stage but will 78 Information and transfer it to your Outbox folder. @University Computing Communication Centre Cont.

The Following window will displayed @University Computing Centre Information and Communication 79 Transmitting and receiving messages Method Click on: the Send and Receive All button Web Browser will send the message automatically and will display that it is sending the message. When it has been transmitted, it is placed in the Sent Items folder. Click on: the folder to check.

@University Computing Centre Information and Communication 80 Copying messages The same message can be sent to more than one address at a time. Sending the message on equal terms to more than one address. In the To: box, key in the e-mail addressers and separate them with semicolons. Example [email protected];[email protected]

NOTE: you dont need a space after the semi-colon. @University Computing Centre Information and Communication 81 Sending carbon copies Method In the To: box, key in the first persons e-mail address. In the CC: box, key in the second person's e-mail address,. The main recipient's is the person in the To: box, with a carbon copy sent to he second addressee(s)

@University Computing Centre Information and Communication 82 Sending blind copies Sometimes you may want to send a copy of the email to an addressee(s) without other recipients knowledge. Method From the view menu, select: All Headers. A Bcc box appears where you can enter the recipients addressees).

Note: With all of the above, the message is again placed in your Sent Items folder and is still treated as one message, even though it has been transmitted to more than one e-mail address. @University Computing Centre Information and Communication 83 Setting a signature Method In the main mail window, from the Tools menu, select options.

In the options dialogue box, click on the Signatures tab In the signatures section, click on New. Select Text and key in your text in the Edit Signature box. Click on Apply, then click OK. @University Computing Centre Information and Communication 84 Inserting a signature in a message You can select Add signatures to all outgoing messages by clicking in the box next to this option OR

In the New Message window, after you have keyed in your message, from the Insert menu, select Signature. @University Computing Centre Information and Communication 85 Exercise Five Sending Message Open an electronic mail application. Send the following message with high priority to someone you know and a copy to someone else. Give the message the title Seminar. Hello Thank you for letting me know about the seminar. I will certainly be there.

Perhaps we could meet in the cafeteria afterwards? Regards [add a signature] @University Computing Centre Information and Communication 86 Opening received mail messages Method Click the inbox icon on the outlook bar or press ctrl-shift-I Or click the view drop down menu, select Go To followed by the Inbox command

@University Computing Centre Information and Communication 87 Attach Files @University Computing Centre Information and Communication 88 messages Sometimes you may want to enclose something with your message e.g. a picture or a different type of file.

Method Create a simple file in MS-Word and save it with the name TEST in a place you will know where to find it (e.g. on a floppy disk in drive A.) Close the file Open your email account Click on Compose, type the recipient address into To box and the Word Greetings in the Subject box Type in the following new message in the message area Hi [name of recipient] I am practicing sending and receiving attachments to email message. Please find the attached file TEST Please could you let me know that you have received my email and also send me a message with an attachment? 89 Information and

Thanks. @University Computing Communication [your name] Centre Attachment cont. Note: DO NOT CLICK SEND YET Click on the Attach file The Insert Attachment dialogue box appears Select the drive where the file is located, e.g.. Drive A. double click on the file so that it appears in File name box( or key in the file name) Click on Attach files. Wait to finish the attaching process You will notice that your attachment is now shown in the header section You can now send the file in the normal way.

@University Computing Centre Information and Communication 90 Saving a file attachment Double click on the message with the attachment so that it appears in its own window. From the file menu, select save Attachments. The Save Attachments dialogue box is displayed Click on Browse to choose where to save it. Click on save OR Right-click on the attachment and select save As

@University Computing Centre Information and Communication 91 Adding Contact @University Computing Centre Information and Communication 92 Adding address Book The address book enables you to store addresses you often use:

Method: Click on the Address Book button The Address Book-Main Identity dialogue box is displayed Click on the New button and then New Contact. The properties dialogue box is displayed With the name tab selected, key in the details of your contact. Click on OK @University Computing Centre Information and Communication 93 Creating an address list

If you want to send a message to people who belong to a certain group, you can create a group address list. Method: Click on the Address Book button Click on the New button, then on New Group. In the group name box, key in the name of the group Click on select members to ad addresses already in your address book. Click on new contact to add new addresses to both the list and your address book. NOTE: if you want to add an address to the group list only, enter the name and e-mail address in the boxes at the bottom of the properties dialogue box.

When you have completed the group entries, click on OK. 94 Information and @University Computing Centre Communication Sending message using the Address Book Method: Click on the New Message button In the header section, click on the TO section The select Recipients dialogue box is displayed. Click on the recipients name or the group name and click on the To button Click on OK. @University Computing Centre

Information and Communication 95 Exercise Six 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. What is a web browser? Every web page has a unique address. This is known as..

What http://www stands for? Write two examples of a domain name There are many ways that you can find information on the web: mention 2 of them Write 5 advantages of network Mention types of network Mention types of server What are network hardware? What are network-devices? What are tools used as network connection devices? What are transmission devices? Give at least 5 network topologies What does a typical URL look like @University Computing Centre Information and Communication 96 Thank you for listening Training Department

[email protected] Monday, February 03, 2020

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