GIMP, utf-8, hex

preliminaries

• Questions about anything so far?
• I've added comments to your assignment submissions. Generally looks good.
• I've also added a rough schedule of chapters and weeks to the syllabus page.
• And the next assignment is posted for next Tues.

hex

• Review base 2 discussion; do an example.
  • base 2 to base 10?
  • base 10 to base 2?
• Discuss base 16: "hexidecimal".
  • an "octet" or "byte" or "8 bits" is 2 hex characters, 00 to FF.
  • ... or a number from 0 to 255 base 10.

special symbols

• Two systems :
  • utf-8
  • HTML codes
• Examples :
  • special_characters.txt
  • special_chars.html

colors

• R, G, B ... why 3 primaries?
• light vs pigment mixing
• color cube
• CMYK system
• in web pages :
  • rgb(10,255,50) : red, green, blue from 0 to 255
  • regular names: red, yellow, purple
  • six hex characters: 000000 to ffffff .
• colorblender - a page for setting up color palettes.

GIMP and images

• Types: GIF, JPG, PNG
• Play around with GIMP a bit; discuss basic operations.
• Example:
  • guitar
  • original

new tags

• ul, li, ol
• q, blockquote (inline vs block)

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