Occasionally we'll study some rather technical stuff, particularly if it comes up over and over again in the "computer world." This is one of those days.
If you want to be comfortable in technical circles, then you can't be scared when
you hear things like "the ASCII 7-bit character set (ISO 646)" or when you see
things like "–" showing up in HTML code. This brings us to...
INDEX CARD #3:
What is "ASCII"? "ASCII" stands for "American Standard Code for
Information Interchange"; it is the standard character set for most
computer operating systems. It has 27 = 128 characters, numbered
0 through 127. The first 32 characters (numbered 0 through 31) are obscure: ASCII was designed for use with teletypes, and many of these first characters were for that use. The remaining 96 characters are the printing characters available on a standard English keyboard.
What's "ISO 646"? The ASCII character set was standardized by ISO
(the International Standards Organization) as ISO-646.
What's the connection between ASCII and HTML? The HTML file
that you create consists only of characters from the ASCII character set.
For example, there's no accented "e" in the ASCII character set, so
you'll never see an accented "e" when you look through any HTML file.
(Of course, after the browser "interprets" the HTML file, then you can
certainly see an accented "e"!)
(There's other fun stuff to try there, too!)
Suppose the letter "t" was broken on your keyboard. (That is, pressing
the "t" key doesn't make a "t" appear on your screen.) What could you
type instead, in your HTML file, to make a "t" appear on the web page?
(W3.2) One popular extended character set is the ISO-Latin-1 character set (also called
ISO8859-1). You can see this (and more!) at:
(A3.1) Read pages 458459 on Internationalization in the Weasel book.
(A3.2) Read pages 8489 (up to "HTML Resources in This Book") in the Weasel
book. These pages include a great table summarizing lots of character codes, including
their names. You may want to create your own tab for this table, so that it's easy to flip to. If you find yourself using symbols that aren't in this
table, write them in!
Determine the names (not entry numbers) for these
symbols: ± ¶ ½
(A3.3) Continue thinking about what you want to put on your HOMEPAGE! Do you have
a specific interest (like table tennis ) or concern (like
health care in the United States ) that you'd like to compile
information on, to share with the world? Jot down a few ideas.