Tuesday, April 5, 2011

HTML vs CSS

  • HTML( Hyper Text Markup Language): HTML is the basic building blocks for a website. It allows you to embed pictures and objects. Helps you to add text to a webstite, and paragraphs, headings etc.

  • CSS(Cascading Style Sheet): It is the presentation of the website. Adds colours, fonts and layout of all pages. Eg makes Title blue.
Example:     /* Generic Selectors */

    body {

    font-family: Georgia, "Times New Roman", Times, serif;

    font-size: 14px;

    color: #333333;

    background-color: #F9F9F9;

    }


    p {

    width: 80%;

    }

    li {

    list-style-type: none;

    line-height: 150%;

    list-style-image: url(../images/arrowSmall.gif);

    }

    h1 {
font-family: Georgia, "Times New Roman", Times, serif;

    font-size: 18px;

    font-weight: bold;

    color: #000000;

    }


    h2 {

    font-family: Georgia, "Times New Roman", Times, serif;

    font-size: 16px;

    font-weight: bold;

    color: #000000;

    border-bottom: 1px solid #C6EC8C;

    }


   

Monday, April 4, 2011

Facebook Privacy

  • People use Facebook to get attention , but we don't care who's reading it because we just want a response.
  • Comments make us want to post more and more stuff, even if it is harmful to us.
  • Other people can easily get into your Facebook.
  • Parents and School block websites like Facebook, so kids think that keeping your things private is a bad thing.
  • School Net Security corrupt the system by selling your information to companies and Dictatorships.
  • When people get feedback on their posts it immediately makes them want to do better. Games are popular because the result of your actions is shown to you as you play. Eg You run in the middle and you get shot.

Wednesday, March 30, 2011

Storage exam Quetions

  1. Describe the differences between RAM and ROM.
Random Access Memory is a form of memory that can be read without having to begin at the first address, then the second address, then the third, and so on. This is a carryover from when most memory was Serial Access, such as magnetic tape, paper tape, or punched cards. The on-board memory computers use for temporary storage is Random Access Memory, but on chips, instead of a hard disc drive.
Read Only Memory is exactly what the name implies, it can only be read, not written to. A CD-ROM is a form of memory, as is a chip on the motherboard which is used to store instructions for the Central Processor Unit. RAM is your computer's temporary storage space. RAM is really the computer's short-term memory. As such, it remembers everything that the computer needs to process the data into information, such as data that has been entered and software instructions, but only when the computer is on. This means that RAM is an example of volatile storage. When the power is off, the data stored in RAM is cleared out. This is why, in addition to RAM, systems always include nonvolatile storage devices for permanent storage of instructions and data when the computer is powered off. Hard disks provide the greatest nonvolatile storage capacity in the computer system.

Source: Wikipedia 

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. 

Tuesday, March 29, 2011

Storage devices

  1. Fixed Hard disks:Used to store stuff on your computer without having to put it onto a seperate storage item.
  2. Portable Hard disks:Used for large storage and is portable for puting one thing from a computer to another. Expensive.
  3. Magnetic Tapes:Used for large and longterm storage. cheap
  4. Optical backing storage mediasuch as CDs and DVDs: Used for storing Media and data and able to use in Dvd and CD players. Relatively cheap  

Sunday, March 27, 2011

Sunday, March 20, 2011

Databases using microsoft access

Step 1. Open up access and create new BLANK database called the Exam Name.
Step 2. Click on External Data,Step 1. Open up access and create new BLANK database called the Exam Name.
Step 2. Click on External Data, then Text File.
Step 3. Then import steps 2,4. (If your in Mr Wells class you will get it.)
Step 4. Then browse for the file in my case it was J8prods, then click finish.
Step 5. Then right-click on the tab in the top left and click on Design View.
Step 6. Change the categories to what you need to, however on the 08 and previous exams they made a mistake so you need to change the Yes/No to Text to keep the Y's and N's. You don't need to do this for exams past 2008.
Step 7. Click continue on the next few bars that come up, it will display a gray screen. Double-click on the name of your database and you have finished Q1. then Text File.


Source: James Bridgeman's Blog