Computer Science 1033A/B Study Guide - Final Guide: Display Resolution, 480I, Chrominance

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Published on 16 Apr 2013
School
Western University
Department
Computer Science
Course
Computer Science 1033A/B
CompSci Final Exam Notes
Lecture 2: Introduction/Beginning
Multimedia text, images, animation, sound, video
- Before someone judges you? Janet Elsea says you have 7-15 seconds to make a
good impression
- Multimedia and communications is to make an impression on the Internet!
- Communication effectively communicate a message clear, exact,
professional, make an impression
- Five senses are mechanisms to communicate with others and environment
most important sense is sight (view images) then touch, followed by sound
(voice recordings, music) then touch (navigate)
- Using a combination of moving and still pictures, sound, music and words,
especially in computers or entertainment” Cambridge definition of multimedia
- How do we communicate? Directly speaking to people, telephone, text
messaging, radio, television, World Wide Web
- The World Wide Web Offers
(1) Accessibility reaches to people all over the world
(2) Is fast
(3) Directly see people (i.e. webcam, Skype)
(4) Is cheap
- The WWW is the voice of power which area has more people? Asia. Which
area has the most Internet users? North American (78.3%). Which area has
the least Internet users? Asia and Africa
History of Multimedia
- 15,000 13,000 BC prehistoric humans paint images on the walls of their
caves
- 1878 first motion picture ever recorded (The Horse in Motion)
- 1914 silent movies incorporated multiple media by using film and text caption
together
- 1927 first full length movie, The Jazz Singer, with synchronized dialogue (i.e.
the first talkie)
- 1928 Walt Disney debuts the second short starring a Steamboat Willie,
Mickey, and is the first cartoon to use synchronized sound
- 1928-1931 Movies with sound replicate silent movies
- 1930s Technicolor is introduced in film and most movies are filmed in colour
after 1940 (The Wizard of Oz filmed in Technicolor in 1939)
- 1937 Bell Laboratories had a breakthrough in creating dual sound tracks on
film. Fantasia was the first commercial movie with a complete surround
sound soundtrack in 1940
- 1969 NETWORK TECHNOLOGY INTRODUCES ARPANET (Advanced
Research Projects Agency Network) starts in 1962, first packet switching
network and the predecessor to the internet
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(1) Objective: build a network technology to allow researchers at various locations
across the country to share information
(2) 4 locations (1969) UCLA, Stanford, Santa Barbra, University of Utah
- 1971 First email sent
- 1977 Apple starts to build and dominate the personal computer market
- 1981 IBM PC announced/introduced and captures market share in 18 months
- 1991 World Wide Web debuted by Tim Berners-Lee
- 1992 MS Windows 3.1
- 1992 HTML (language in which webpages are based on)
- 1993 the first graphical browser is born (allows us to see web pages containing
IMAGES), it is called Mosaic, by Marc Andreessen, Erin Brina, and Tim Clark
- 1994 The Rolling Stones become the first major band to broadcast a live
performance over the internet
- 1995 Disney releases Toy Story, the first feature length computer generated
movie
- 1996 Affordable digital cameras widely available
- 1998 Google Search Engine operates by Larry Page and Sergey Brin
- 1999 Napster debuts, allowing users to download and share MP3s
- 2000s Integration of computer, memory storage, digital data camcorders, MP3
players, IPods, speakers, telephones, HD TV and other technologies explodes!
- 2001 Apple introduces iTunes and the iPod
- 2005 YouTube.com launches
- 2007 Search engine giant Google surpasses Microsoft as "the most valuable
global brand," and also is the most visited Web site
Faces of the Internet Legacy Bill Gates (Microsoft Team), Larry Page and
Sergey Brin (Google), Tim Berns-Lee (responsible for World Wide Web), Marc
Andreessen, Erin Brina, and Tim Clark (Mosaic)
Progression of Technology: 1981 PC, 1991 WWW, 1992 Windows, 1993
Mosaic (browser), Google (search engine)
Legal Issues:
Copyright, rights, management, privacy, intellectual property
Problematic because of the rapid change in technology
Is it necessary to have the web design skills set? Absolutely! We are moving
towards a paperless society
Articulate, think, and write clearly - for report, documentation
Web design skills an essential Power of the Internet!
Every career requires multimedia skills IT and design
Text
- Text can be used to serve two purposes
(1) Convey information
(2) Visual impact (posters, websites, etc.)
- What can you do if you really want to use an unusual font on your website?
Create a .jpg or .gif file of the text in Photoshop so it can be read by all than
insert it into your website
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- Text sets a mood
How is text used?
- Colour
- Colour is defined by: Hexadecimal Code always made up of decimals (0-9)
and letters (A-F)
- Represents RRGGBB (ex: red= FF0000, green= 00FF00, blue= 0000FF)
- Western Purple = #660099
- Font type Arial, Times New Roman, Comic Sans
- Style regular, bold, italic, superscript, subscript
- Kerning adjusting the space between pairs of letters (cha r a cter)
- Tracking adjusting space between all of the characters (c h a r a c t e r s)
- Leading amount of vertical space between lines of text (measured in either
positive or negative points or zero)
o “Loose Track” = more space between all characters
o “Tight Track” = less space between all characters)
o How to do kerning/tracking in Photoshop: In character tab, highlight
characters you wish to change
- RULE: to read easier, distance between lines should be greater than distance
between words
- Size points (word processing) vs. pixels (8pt. 10pt, 10px, 36pt.)
o Pixels are a measurement for text and images for the web on a monitor
o Pixel is the smallest discrete component of an image or picture on a
monitor
o Point - A linear unit measuring the size of text in a word processing
document
o Points are a print unit of measure (word processing)
o 72pt = 1inch when printed
o 1pt = 1/72inch when printed
o 11 pixels ≠ 11 points
Font Types
- Serif tails, script, used for body paragraphs (ex: Times New Roman, Courier
New, Century Schoolnook, Palatino)
- Sans-Serif no tails, block oriented, used for headings and titles (ex: Arial,
Verdana, Helvetica, Arial Black, Comic Sans MS)
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Document Summary

Janet elsea says you have 7-15 seconds to make a good impression. Multimedia and communications is to make an impression on the internet! Communication effectively communicate a message clear, exact, professional, make an impression. Five senses are mechanisms to communicate with others and environment most important sense is sight (view images) then touch, followed by sound (voice recordings, music) then touch (navigate) Using a combination of moving and still pictures, sound, music and words, especially in computers or entertainment cambridge definition of multimedia. Directly speaking to people, telephone, text messaging, radio, television, world wide web. The world wide web offers (1) accessibility reaches to people all over the world (2) is fast (3) directly see people (i. e. webcam, skype) (4) is cheap. 15,000 13,000 bc prehistoric humans paint images on the walls of their caves. 1878 first motion picture ever recorded (the horse in motion) 1914 silent movies incorporated multiple media by using film and text caption together.

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