CS 010 Summary

Part I: HyperText Mark-up Language

To make a web page, write a text document using notepad or simpletext and save it as .html or .htm instead of .txt. Tags, marked out by < and >, go before everything that shouldn't be plain text. Always remember to close the tag by repeating it as after the part you want to change. Start out with <HTML>. Don't forget to close it at the bottom of the page. Then make a title between <TITLE> and </TITLE>. Then open the body of the web page with <BODY>. Some tags can have attributes, which come after a space after the main word of tag, but before the >. For example, <BODY bgcolor="yellow">, which makes the background of the whole web page yellow. More tags and attributes can be looked up on various tutorial web pages like htmlgoodies.

Making tables is a bit more complex. <table> opens the table; <tr> opens a row; and <td> opens a cell. All three of these can have attributes. If you don't tell <table> how thick to make the border, the border is automatically set to 0 and it is invisible. If you want your table to have a border, <table> needs the attribute border="1", for example. If you want a cell to span more than one column, you can tell it to with the attribute colspan= followed by the number of columns that you want it to span. Likewise with the rowspan attribute. Again, don't forget to close every tag.

Tables can be very useful because if you set border="0", you can use it simply to put things side-by-side on a page.

Part II: Binary

Abacuses are wooden frames with silver beads on gymp strung from one end of the frame to the other used to do arithmetic.

0	1	10	11	100	101	110	111	1000	1001	1010	1011	1100
0	1	2	3	4	5	6	7	8	9	10	11	12

In binary, the rightmost column is the ones columns. The second- rightmost is the twos, the next is 4s, then 8s, then 16s, then 32s, etc.

Computers think in binary.

You can too.

move on to:

logic/truth tables

theories about how computers can change humanity