I.C.T. Department Year 7 Unit 1

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SPIRIT in ICT

Departmental Expectations

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A
Access Provider
A business that offers to connect people to the internet e.g. Freeserve or AOL. See also Internet Service Provider.
Accessibility
This describes how well the site caters for people with sight, hearing or other difficulties.
Active Hyperlink
The active link is the one that is currently being looked at. Usually a link changes in colour when it is being viewed.
Active Server Page - ASP
These are web pages that contain scripts (computer programmes) that are run on a web server computer rather than being run on your PC at home. They enable pages to interact with the user and are often used on sites which let visitiors search databases, e.g. Amazon's vast book catalogue.The page will look just like a normal web page on your computer.
Active X
A computer programming language that is used to create fun and interactive web pages.
Address
An email address e.g. jackie@WebGenies.co.uk or the address of a web site e.g. http://www.webgenies.co.uk. See also domain name.
Anchor
When you click on a picture or some text which is linked to an anchor you will go straight to the correct part of a web page. E.g. clicking on the N in the alphabet above takes you straight down to the N section of this page. The start of the N section has been made into an anchor.
Antialias

An effect often used on text, in which the edges of the letters are blended to make them look smooth e.g. compare Antialiased and Not Antialiased here:

examples of antialiasing

Animated GIF
A file made up of a series of pictures that are shown quickly one after the other to give the appearance of a moving picture e.g. animated gif
Animation
A film made up of lots of pictures being shown quickly one after the other to create movement.
AOL
America Online. A large online Internet service provider in the US.
Applet
A small computer programme often written in the computer language Java.
AVI

Audio Video Interleaved. AVI files play sounds and videos

 

B
Background
The basic overall colour or background design of your web page. The background of this page is orangey/yellow. A background sound is one that is played when your page is displayed.
Banner
Part of a web page, usually near the top, which has moving text and/or images. Banners are often used to advertise things.
Bevel
An effect which gives pictures or text a 3D look e.g.
Bitmap
This is the standard file format for pictures on a Windows computer. However bitmaps (BMPs) aren't used much on the web because of their large file sizes - use GIFs or JPEGs instead.
Body
An HTML tag referring to the main part of a web page - <body>
Bookmark
Browsers let you keep a list of the addresses of your favourite web sites. When you click on any of these bookmarks they take you straight to the site. Microsoft Explorer calls it's bookmarks favourites.
Browser
The programme on your computer that lets you see web pages. The most popular are Microsoft Internet Explorer and Netscape Navigator.
Browser safe palette
C
Cascading style sheets (CSS) Style sheets are like templates in that they let you set the font (text) properties - size, type, colour, etc. - for the whole site. This means that If you wanted to change the colour of the font say from red to green you could do this just once in the style sheet rather than having to change every page in your site individually. This saves web designers a lot of time but unfortunately not all browsers display CSS correctly.
Cell

One box in a table. This table has 4 cells.

1 2
3 4
Cell padding The space between the contents of a cell and the border of the cell. This table has padding set to 3. (spacing =0)
xxxxx xxxxx
xxxxx xxxxx
Cell spacing
The thickness of a cells walls or borders. This table has spacing set to 3. (padding =0)

   
   
CGI
Common Gateway Interface. This describes the way a computer and a CGI script (a type of computer code) communicate (talk) with each other. A common use of CGI is in dealing with forms. When you fill in a form online, with your name, age and hobbies say, the browser sends this information to a CGI script on the server. This script adds your data to a database, along with the information from everyone else who has completed the form.
Client side programme A fancy name for a computer programme that runs on your computer and not on the server. An example of a client programme is the browser Netscape Navigator.
Compression

This is the process used to save an image with as small a file size as possible. When images are compressed they are reduced in file size - which also reduces their download time.

 

D
Database

A file containing records of information such as visitors names and email addresses which can be sorted and searched. Imagine your address book organised on a computer - that's a database!

DHTML

Dynamic Hypertext Markup Language. This uses javascript to create interesting effects on a web page such as animations. These effects can be set to happen when a page loads or when a visitor clicks on a link, amongst other things.
Dial up

Connecting to another computer using a modem.
Discussion Group

These groups let visitors to a web site email in messages, questions and comments. Other people using the site may respond to any comments a visitor makes hence creating a discussion.

Dithering

The human eye can see about 16 million different colours but some old computer screens can only display 256 colours. These screens have to try to approximate the colours they can't display using a process called dithering. Dithering involves mixing pixels of the colours they can display together - a bit like you making an orange colour by mixing up alternate dots of red and yellow. As you can imagine dithering creates a rather speckley appearance see

Domain Name

Every internet site has a domain name e.g. in the address horbury.wakefield.sch.uk, horbury.wakefield is the domain name.People creating web sites usually have to buy the name they want to use.

Download

To transfer a file from the internet to your computer's own hard drive.
Download
time

The time it takes for a web page, picture etc. to become fully visible on your computer screen.

DPI Dots per square inch. This refers to the resolution of a computer screen. Most screens have 72 dots per square inch

 

E
Email To send messages and/or files electronically over the internet.
External link A link to someone else's web site.
F
FAQ Frequently Asked Questions. A list of the answers to commonly asked questions about a topic.

File Information stored on a computer is stored in a file.

Firewall A way of protecting the files in your computer from hackers, who may try to change or delete the information. Most businesses have a firewall. This lets the folks who work there browse the internet but stops anyone outside the company being able to look at the company's computer files.

Flash A computer programme from Macromedia which allows people to make movies to show on their web pages.

Frame rate In videos or animations the frame rate is the number of frames (pictures) that are shown in one second.

FTP File Transfer Protocol. A method of sending files over the internet. You will probably upload your web pages to the internet using ftp.
G
Gateway A computer system which links two networks together

GIF Graphical Interchange Format. An image (picture) file. GIFs are mainly used for simple pictures like logos. They can contain up to 256 different colours.

Greyscale Image Greyscale images contain no colours, just shades of black, grey and white.
e.g.greyscale image
H
Hacker A slang term for someone who breaks into other people's computer systems

Hit Every time a visitor views a web page it is recorded as a hit. You can use a hit counter to keep a note of how many people are visiting your web site.

Home page The first page that displays when you connect to a web site. It usually contains a brief guide to what the site is about and links to other pages on the site. The page name usually ends in default.htm or index.htm.

Hotspot An area in a graphic or picture that contains a hyperlink. A graphic with these hotspots is called an image map.

Host The computer you connect to when logging on to the internet.

HTML HyperText Markup Language. The text based language that is used to create web pages. HTML uses tags tell web browsers how to display things like text and graphics.

HTTP HyperText Transfer Protocol. The language the web itself uses to get web pages from their servers and send them to your PC's browser.

Hue The shade or tint of a colour.

Hyperlink/ Hypertext Any text (or picture) that lets visitors jump to other information, either in the same site or on another site altogether.

I
Icon A small image on a web page, often acting as a link to another page.

Image A picture.

Image map A single picture that contains more than one hot spot. An example might be a map of Britain where the main towns on the map are the hot spots.

Interactivity Interactive web sites are sites where visitors can change what is on the screen and make different things happen according to what they click on e.g. playing games or getting an animation to display.

Interlacing A way of displaying pictures which lets the viewer see a blurry copy of an image which gets clearer and clearer as it downloads.

Internet The worldwide connection of millions of computers all linked up together.
Internet Explorer A browser developed by Microsoft

Internet Service Provider (ISP) A business that allows you to connect to the internet from your own PC. See also Access provider.
Intranet A web site set up especially for the people within an organisation and viewable by people in that organisation rather than across the worldwide internet.

IP address A numeric form of an internet address e.g. http://195.89.987.98. Every site has it's own unique number.

ISDN Integrated Service Digital Network. A fast way of connecting to the internet using a special type of phone line
J
Java A programming language sued to create small programmes called applets. Applets can run within a web page and can do lots of fun things like let users play games, create special effects animations and lots more. The word search on the fun page is creating using Java.

Javascript Another programming language that adds interactivity to web pages. Examples include flashing text, rollover buttons and pop-up windows. Javascript is easier to learn than Java but not as powerful.

JPEG Pronounced JAY PEG. A file format used for images. It is best used for photographs and pictures with lots of different colours. JPEGs can display 16 million colours.
M
Marquee A text effect where words move across the page in a line, e.g.marquee example

Modem Modulator-demodulator. A little box outside your computer or a card inside, which connects your PC to the phone lines. (Modems convert the digital signal from a PC to an analog signal which is the type of signal phones understand).

Midi Musical Instrument Digital Interface. A file format used for music files.
N

Net Short for Internet.

Netiquette Name for the good manners you should use when e-mailing other people. For example it is considered bad manners to email using all CAPITAL LETTERS!

Netscape Navigator The browser developed by Netscape.

Network System for linking computers together with cables and a network card so that they can share information between them.
O
Off-line When you are not connected to the internet.

Online

When you are connected to the internet.

 

P
Pixel The name for the smallest square or dot that makes up the display on a computer screen. Depending on your screen's resolution it normally has 800*600 = 480 000 pixels.

Plug-in A small programme which users can download which lets them see or do extra things on a web site, e.g. the Quicktime plug-in lets visitors watch movies and the Shockwave plug-in lets them play games.

PNG Portable Network Graphics. Pronounced PING. Another file format for pictures. Unfortunately is is not supported by all browsers as yet.

Progressive JPEG Allows viewers to see a JPEG image gradually by displaying a blurry image that becomes clearer as it downloads. See also interlacing.
R
Resolution Describes how many pixels are displayed on your screen. The most popular resolution currently is 800x600. The higher the resolution the smaller text and images will appear on your screen.
Rollover The change that happens when a person places their mouse pointer over some text or an image on a web page. Examples of rollovers include text that may change colour or start glowing, and pictures which change into new pictures as the mouse passes over them. The button links on the home page are rollovers.
Router A special computer which moves internet data from one place to another.
S
Script Computer programming code.

Server A server is a computer that shares data with other computers on a network. Web Servers store and share web pages.

Service Provider A business that provides you with access to the internet. See also Internet Service Provider.

Shareware Software that is free for you to try for a limited period, usually around one month.

Shockwave Video for the web produced by a company called Macromedia.

Spamming Sending the same e-mail to a large number of people. Advertisers may do this to get a lot of people to hear about their products. Spam is the name given to these sort of e-mails.

Streaming Streaming video or sound files begin to play as soon as the start downloading on to your computer. (i.e. they don't have to download completely before they start to play).

T
Tag Tags are the HTML instructions put into angled brackets < >,which tell your computer's browser how to display a web page e.g. <B> means display the text in bold.

 

U
Upload Moving a file, e.g. a web page, from your computer to a server on the Internet. This is what you will need to do to get your site online.

URL Uniform Resource Locator. An internet address e.g. http://www.horbury.wakefield.sch.uk
W
W3C World Wide Web Consortium. Lots of organisations which work together to help set up standards for how the web works and develops.

Web browser The programme your computer uses for viewing web pages. The most popular are Microsoft Internet Explorer and Netscape Navigator.

Web Palette The set of 215 colours that will not dither (speckle) when viewed on old 8-bit monitors. Also called the Safety Palette.

World Wide Web (WWW) The total set of interlinked web pages which use highlighted text, images and sometimes sounds, videos, games etc, and which are stored on web servers around the world.

 

 

Index

Introduction

Start Designing

Create your first page

Using a Table

Images and Animation

Creating a Link

Managing and Uploading

Glossary

Top Tips

Careers

Useful Links