CSCI-120-A: Introduction to Computer Science
Fall 2009

1. Your name
2. your e-mail address
3. A paragraph about yourself.
4. A paragraph about your home town.
5. A paragraph about your major and why you picked it.
6. A paragraph about what you would like to do after graduation.
7. Five of each of the following
• Favorite movies
• Favorite musical artists
• Favorite books
• Favorite web sites

• A pleasant background color
• A page title
• An h1 heading for the page
• An h2 heading for each section of the page
• An ordered and an unordered list.

• A main page
• Information about youself - Something like you did for Assignment 3
• Information about your summer vacation - similar to Assignment 5
• A place for the MS Office proudcts we will be looking at. These include
  • MS Word
  • MS PowerPoint
  • MS Excel
• Something else that's interesting

• Build the file structure based your design from assignment 6.
• Add your home page.
• Add your persoal Web page from Assignment 3.
• Add an enhanced version of the Web from Assignment 5 (about your summer vacation).
• Add the Web page you created for Assignment 7.
• Add the lilnks needed to allow somewone to nagivage through your Web site.

This assignment deals with credit card numbers. It you were to enter your credit card number wrong (typically by swapping adjacent digits, like 43 for 34, or getting pairs of the same digit wrong, so 899 becomes 889) then someone else could end up being charged for your purchase. To help prevent these simple typing errors credit card numbers are self checking. This means that a simple check can be preformed to see if the card number entered is valid or invalid. The check goes like this:

Take an imaginary Visa card number

4000 1234 5678 9314

First we take every other digit in the number, going from left to right, starting with the first (i.e. the odd-numbered positions), and double it. This gives the numbers 8, 0, 2, 6, 10, 14, 18, 2. Where there are double digits in the resulting numbers (like 10, 14, 18) we add the two digits together to get (1, 5, 9), which has the same effect as subtracting 9. The list of doubled numbers now reads 8, 0, 2, 6, 1, 5, 9, 2. Now we add them together and then add all of the numbers in between (i.e. the even-numbered positions) that we missed out the first time (0, 0, 2, 4, 6, 8, 3, 4). This gives the sum, in order, as

8 + 0 + 0 + 0 + 2 + 2 + 6 + 4 + 1 + 6 + 5 + 8 + 9 + 3 + 2 + 4 = 60

In order for the card number to be valid, this number must be exactly divisible by 10, which in this case it is. Whereas, if the card number was 4000 1234 5678 9010, then the same calculation would have generated the number 53 and this number is not exactly divisible by 10.

Assignment: Create an Excel spreadsheet that allows you to enter a 16 digit credit card number into a single cell and uses the above procedure to display a message saying whether the card number is valid or invalid.

Mon 11/2
11:59 p.m.

Create an HTML document that contains the tables from Exam 2. Your HTML tables don't have to match the Excel table exactly, but they should be close. You should use the three colors (red, green, blue), alignment should match (left, right, center), and the column widths should be close. You can use standard HTML borders though. Your HTML tables do not need to contain formulas that calculate the numbers shown.

Please turn in this assignmet by publishing it to your personal web site you created for this class.