CSS example

h1{font-family: "Times New Roman", Times, serif; font-size:20px; color:#000; text-align:center; font-weight:bold}
h2{font-family:"Times New Roman", Times, serif; font-weight:bold; font-size:18px; color:#30F; text-align:center}
h3{font-family: "Times New Roman", Times, serif; font-size:16px; color:#000;text-align:left}
li{font-family:Arial, Helvetica, sans-serif; font-size:14px; list-style:
circle; text-align:left; color:#000}
p{font-family: Arial, Helvetica, sans-serif; font-size:14px; color:#006; font-style:italic}

HTML vs CSS

Use of CSS- Cascading Style Sheets and HTML-Hyper Text Markup Language

The information in your web site should go into your HTML files, but HTML files should not contain information about how that information is displayed. This means now that information about how the pages should appear goes into CSS files.

HTML

Privacy on the internet

Notes from Cory Doctorow

• Feedback with action-makes you better
• Reaction is very far from action will not make you change
• Cookies- fat   smoking- cancer
• Parents employ surveillance- kids will not learn to be safe on the internet
• Girls chatted on random blogs because social networking sites were blocked
• Surveillance of everything on the internet teaches them to undermine their privacy
• Teach kids to encrypt everything on the internet
• School privacy system sells information to middle eastern governments

People with only a casual concern for Internet privacy need not achieve total anonymity. Internet users may achieve an adequate level of privacy through controlled disclosure of personal information. The revelation of IP addresses, non-personally-identifiable profiling, and similar information might become acceptable trade-offs for the convenience that users could otherwise lose using the workarounds needed to suppress such details rigorously.


FEEDBACK

Must be as close to the attempt as possible. You want to do better immediately. Games are popular because the result of your actions is show to you as you play. 

Question answers for storage devices

·        Backing storage:
Name two items which are storage media.
Flash memory card      Graph plotter       Magnetic disc       OCR          OMR            Touch pad

·        Explain why the following are used with PCs.

Pen drives- To transfer smaller files

Blu-ray- For storage of up to 50gb and can hold HD movies

Fixed hard disc drives- Used in computers to store the permanent files

·        Ring two items which are output devices.

Blu-ray disc

Optical mark reader

Graph plotter

Projector

Web cam

Graphics tablet

·        Complete the following sentences using the most suitable storage device or medium listed below.

(a)memory stick

(b)fixed hard disk drive

(c)DVD R

A student taking his coursework home to develop would use a  memory stick

A company selling copies of games would use a DVD R

An office worker who never took her work home would store her work on a fixed hard disk drive

Why backup?

A file backup is a copy of a file that is stored in a separate location from the original. You can have multiple backups of a file if you want to track changes to the file. Backing up your files helps to protect them from being permanently lost or changed in the event of accidental deletion, a worm or virus attack, or a software or hardware failure. If any of those things occur and your files are backed up, you can easily restore those files. 

Storage devices and media

Use of Backing Storage at Kings College

• Fixed hard discs- Used in every computer in the school
• Portable hard discs- Used to store large files
• Magnetic tape- Uses serial access for reading and writing.  Used for backups of file servers for computer networks. Optical backing storage media such as CDs and DVD and is quite cheap for backing up files at King's.
• Optical backing storage media such as CDs and DVD-CDs tend to be used for large files (but smaller than 1Gb) which are too big for a floppy disc to hold such as music and general animation.  DVDs are used to hold very large files (several Gb) such as films at school.
• CD ROM/DVD ROM-Applications which require the prevention of deletion of data, accidental or otherwise for students.
• CD R/DVD- Applications which require a single burning of data, e.g. CDs Z recording of music downloads from the internet, recording of music from MP3 format, recording of data for archiving or backup purposes at King's.
• CD RW/DVD RW-Applications which require the updating of information and ability to record over old data at King's.
• DVD RAM- Same properties as DVD RW but quicker access and data can be overwritten more easily. 
• Blu-ray-Capacities of 25Gb, 50Gb and 100 Gb.  Used for storing films (movies). 25Gb equates to 2 hrs HDTV, 13hrs standard definition TV
• Solid state backing storage-Smallest form of memory, used as removable storage at school.  More robust than other forms of storage. 
• Memory sticks/Pen drive-Used at Kings to transport small files conveniently.
• Flash memory cards-Used in digital cameras, palmtops, mobile phones, MP3 players at Kings

Database tasks-Query

Database Task - Query Criteria

In this image you are shown every option available when setting up a Query (Saved Search). I have only bothered to explain the less obvious options.


Turning a BIG grid of info into a SMALL grid:
A way to think about the query is only showing some rowsfrom a large table of Data so that the smaller set of info that remains can fit on a piece of paper. It is a smaller grid of info because you tell the Database to only look for certain info.