128.230. Internet, Routers, DNS, and HTML. 10. 14. 11. Chicago. Boston. CNY. 13. Seattle. Yale. 15. NYC. 12. 9. DNS: cs.colgate.edu = 126.96.36.199 ………. 188.8.131.52 184.108.40.206 (cs.colgate.edu) 149.43.2 220.127.116.11 …………. ~chungli public_html/ index.html. Denver. 3. html.
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cs.colgate.edu = 18.104.22.168
We need a DNS to translate this domain name so the router knows how to forward the message.
Suppose the IE is configured to use the DNS in SF
cs.colgate.edu = 22.214.171.124
Cosmetics & HTML
Tools or material to make up faces
Face + (????)
HTML : HyperText Makeup Language
Tools or material to make up hypertext document
HTML Document = Hypertext + HTML Tags
How: An html document is stored in plaintext format (why?) but uses tags to distinguish the text for the reader from the instructions to the computer.
An HTML document can:
Provide information to Search Engines, instruct web browsers (IE, Netscape, Hotjava..), send and collect information to and from web vierwers.
Mathematicians and Philosophers
by Chung-Chih Li
"I am thinking, therefore I exist."
Descartes was the most important figure in modern mathematics and philosophy, and this probably is the most famous say of Descartes; but what does it really mean? The existence is established necessarily via mankind's awareness, which seemed self-evidence to Descartes, but some obvious objections followed immediately. You may want to see the excellent debate in Meditations on First Philosophy edited by John Cottingham --, which is a collection of Descartes' Meditations, their objections, and Descartes' replies.
"The brain is a machine."
<h1> Mathematicians and Philosophers </h1>
<div class="author">by Chung-Chih Li </div>
<h3> Rene Descartes: </h3>
<h4> "I am thinking, therefore I exist.“
Descartes was the most important figure in modern mathematics and philosophy, and this probably is the most famous say of Descartes; but what does it really mean? The existence is established necessarily via mankind's awareness, which seemed self-evidence to Descartes, but some obvious objections followed immediately. You may want to see the excellent debate in <em class="s"> Meditations on First Philosophy </em> edited by <strong> John Cottingham </strong> --, which is a collection of Descartes' Meditations, their objections, and Descartes' replies.
<h4> "The brain is a machine. " </h4>
Text: Every letter in a text document is for its reader to read.
HTML Document: Some letters or words are not for its reader to read but for computer to control the appearance of the text or perform some tasks; text, tables, frames, pictures, images, links, scripts, etc.
PlainText editor : Only the letters seen on the editor screen will be stored (in ASCII), e.g, notepad, vi, emacs, winedt..
In general, a tag is an instruction to instruct the web browser how to present the objects ;
<h1>This is H1</H1>
End tag closes the effect
of start tag.
Some tags do not have end tags, e.g.
<br> : line breaking
Some tags use attributes to specify how to perform their functions.
<font color=“green”> Turn me into green </font>
We can specify more than one attribute in a tag. E.g.
<font color=“green” size=+2> Turn me bigger and green
Some tags generate objects for the web browser.
<hr size=10 color=“green" align="left" width=20%>
<hr size=10 color=“red" align=“center" width=50%>
<title> Basic HTML </title>
<meta http-equiv="Content-Type" content="text/html; charset=big5">
<meta name="Author" content="Chung-Chih Li (Dennis)">
<meta name="GENERATOR" content="Microsoft FrontPage 3.0">